APA (7th ed.) Citation

Yap. (1992). Fortress Singapore: The battlefield guide. Times Editions.

Chicago Style (17th ed.) Citation

Yap. Fortress Singapore: The Battlefield Guide. Singapore: Times Editions, 1992.

MLA (8th ed.) Citation

Yap. Fortress Singapore: The Battlefield Guide. Times Editions, 1992.

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