Citazione APA

Duck, S. E., & Silver, R. C. E. (1990). Personal relationships and social support.

Stile di citazione Chicago

Duck, Steve; Ed, e Roxane Cohen; Ed Silver. Personal Relationships and Social Support. New Delhi, Sage Publications, 1990.

Citazione MLA

Duck, Steve; Ed, e Roxane Cohen; Ed Silver. Personal Relationships and Social Support. 1990.