APA (7th ed.) Citation

Collins, L., & Lapierre, D. (1968). Or I'll dress you in mourning. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Collins, Larry, and Dominique Lapierre. Or I'll Dress You in Mourning. London: Weidenfeld and Nicolson, 1968.

MLA (9th ed.) Citation

Collins, Larry, and Dominique Lapierre. Or I'll Dress You in Mourning. Weidenfeld and Nicolson, 1968.