"Social democracy is a political ideology that officially has as its goal the establishment of democratic socialism through reformist and gradualist methods. Alternatively, social democracy is defined as a policy regime involving a universal welfare state and collective bargaining schemes within the framework of a capitalist economy. It is often used in this manner to refer to the social models and economic policies prominent in Western and Northern Europe during the later half of the 20th century."

Wikipedia Social Democracy ebook. Selected articles from Wikipedia related to Social Democracy in .epub format. 

This book is part of the radical seed collection; and for independent researchers
looking to followup the citations and further readings, you can find most of them in the radical seed (https://thepiratebay.ee/torrent/9389639/Op_Radical_Seed).

Selected Wikipedia Articles:

- Social Democracy

Development of Social Democracy
- Humanism
- Age of Enlightenment
- French Revolution
- Utopian socialism
- Trade Union
- Revolutions of 1848
- Orthodox Marxism
- Revisionism (Marxism) 
- Progressivism
- Reformism
- Gradualism
- Frankfurt Declaration
- Ethical socialism

Ideas of Social Democracy
- Representative democracy
- Democratic revolution
- Economic democracy
- Labor rights
- Mixed economy
- Nationalization
- Welfare state
- Fair trade
- Environmental protection
- Negative and positive rights
- Secularism
- Social corporatism
- Social market economy

Variants of Socialism
- Eduard Bernstein
- Liberal socialism
- Nordic model
- Godesberg Program
- Third Way

People
- Clement Attlee
- Obafemi Awolowo
- Zulfikar Ali Bhutto
- Hjalmar Branting
- John Curtin
- Ignacy Daszynski
- Eugene V. Debs
- Tommy Douglas
- Bulent Ecevit
- Felipe Gonzalez
- Rudolf Hiferding
- Jean Jaures
- Zhang Junmai
- Tetsu Katayama
- Ferdinand Lassalle
- Jack Layton
- Rene Levesque
- Nelson Mandela
- Ramsay MacDonald
- Ralph Nader
- Jawaharlal Nehru
- Jose Ordonez
- Georgi Plekhanov
- Michael Savage
- Olof Palme
- Norman Thomas

Organizations
- List of social democratic parties
- Socialist International
- International Union of Socialist Youth
- Party of European Socialists
- Progressive Alliance (political international)
- Young European Socialists
- International Trade Union Confederation