APA (7th ed.) Citation

O'Sullivan, P. (1986). Geopolitics / Patrick O'Sullivan. Croom Helm.

Chicago Style (17th ed.) Citation

O'Sullivan, Patrick. Geopolitics / Patrick O'Sullivan. London: Croom Helm, 1986.

MLA (9th ed.) Citation

O'Sullivan, Patrick. Geopolitics / Patrick O'Sullivan. Croom Helm, 1986.

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