APA (7th ed.) Citation

Clarke, J. E. (1981). A model wildlife program for developing countries. [publisher not identified].

Chicago Style (17th ed.) Citation

Clarke, John Ernest. A Model Wildlife Program for Developing Countries. [Place of publication not identified]: [publisher not identified], 1981.

MLA (9th ed.) Citation

Clarke, John Ernest. A Model Wildlife Program for Developing Countries. [publisher not identified], 1981.