APA (7th ed.) Citation

Bowlby, J. (1991). Attachment and loss / John Bowlby (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Bowlby, John. Attachment and Loss / John Bowlby. 2nd ed. Harmondsworth: Penguin, 1991.

MLA (9th ed.) Citation

Bowlby, John. Attachment and Loss / John Bowlby. 2nd ed. Penguin, 1991.

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