APA (7th ed.) Citation

Harper, Mudd, & Whitfield. (2002). The rough guide to New Zealand (3rd. ed.). Rough Guides.

Chicago Style (17th ed.) Citation

Harper, Mudd, and Whitfield. The Rough Guide to New Zealand. 3rd. ed. London: Rough Guides, 2002.

MLA (8th ed.) Citation

Harper, et al. The Rough Guide to New Zealand. 3rd. ed. Rough Guides, 2002.