APA (7th ed.) Citation

Ching, W. C. (1941). A study of larvicides used for mosquito control. [publisher not identified].

Chicago Style (17th ed.) Citation

Ching, Wah Choy. A Study of Larvicides Used for Mosquito Control. [College Station, Texas]: [publisher not identified], 1941.

MLA (9th ed.) Citation

Ching, Wah Choy. A Study of Larvicides Used for Mosquito Control. [publisher not identified], 1941.