APA (7th ed.) Citation

(2004). London: The official gay & lesbian guide / Visit London. Visit London [u.a.].

Chicago Style (17th ed.) Citation

London: The Official Gay & Lesbian Guide / Visit London. London: Visit London [u.a.], 2004.

MLA (8th ed.) Citation

London: The Official Gay & Lesbian Guide / Visit London. Visit London [u.a.], 2004.

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