APA (7th ed.) Citation

Lewis, M., & Martin, S. (2006). The rough guide to Singapore. Rough Guides.

Chicago Style (17th ed.) Citation

Lewis, Mark, and Steve Martin. The Rough Guide to Singapore. New York: Rough Guides, 2006.

MLA (9th ed.) Citation

Lewis, Mark, and Steve Martin. The Rough Guide to Singapore. Rough Guides, 2006.

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