APA (7th ed.) Citation

Callahan. (1977). The worst disaster: The fall of Singapore. University of Delaware Press.

Chicago Style (17th ed.) Citation

Callahan. The Worst Disaster: The Fall of Singapore. Newark: University of Delaware Press, 1977.

MLA (8th ed.) Citation

Callahan. The Worst Disaster: The Fall of Singapore. University of Delaware Press, 1977.