APA (7th ed.) Citation

Duck, S. (1991). Friends, for life: The psychology of personal relationships (2nd ed.). Harvester Wheatsheaf.

Chicago Style (17th ed.) Citation

Duck, Steve. Friends, for Life: The Psychology of Personal Relationships. 2nd ed. New York [etc.]: Harvester Wheatsheaf, 1991.

MLA (9th ed.) Citation

Duck, Steve. Friends, for Life: The Psychology of Personal Relationships. 2nd ed. Harvester Wheatsheaf, 1991.

Warning: These citations may not always be 100% accurate.