APA (7th ed.) Citation

Watt, K. E. F. (1961). Mathematical models for use in insect pest control. [publisher not identified].

Chicago Style (17th ed.) Citation

Watt, Kenneth E. F. Mathematical Models for Use in Insect Pest Control. [Ottawa]: [publisher not identified], 1961.

MLA (9th ed.) Citation

Watt, Kenneth E. F. Mathematical Models for Use in Insect Pest Control. [publisher not identified], 1961.