APA (7th ed.) Citation

Bowlby, J. (1971). Attachment and loss / John Bowlby. Penguin.

Chicago Style (17th ed.) Citation

Bowlby, John. Attachment and Loss / John Bowlby. London: Penguin, 1971.

MLA (9th ed.) Citation

Bowlby, John. Attachment and Loss / John Bowlby. Penguin, 1971.

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