APA

Sweder H., Symposium Action rresearch and scientific analysis= Investigación activa y análisis científico (Cartagena C. A. 1. 1., .Deficiences in action research and community work. Cartagena: A.I.S.

Chicago

Sweder Harald, Symposium Action rresearch and scientific analysis= Investigación activa y análisis científico (Cartagena Colombia Abril 18-23 1977), .Deficiences in action research and community work. Cartagena: A.I.S.

Harvard

Sweder H., Symposium Action rresearch and scientific analysis= Investigación activa y análisis científico (Cartagena C. A. 1. 1., .Deficiences in action research and community work. Cartagena: A.I.S.

MLA

Sweder Harald, Symposium Action rresearch and scientific analysis= Investigación activa y análisis científico (Cartagena Colombia Abril 18-23 1977), .Cartagena: A.I.S. .