Handbook of tropical and sub-tropical horticulture,
by Ernest Mortensen and Ervin T. Bullard.

APA Citation

Mortensen, E., Bullard, E. T., United States. Agency for International Development. Communications Resources Division. (1968). Handbook of tropical and sub-tropical horticulture. Washington: Dept. of State, Agency for International Development.

MLA Citation

Mortensen, Ernest, Ervin T Bullard, and United States. Agency for International Development. Communications Resources Division. Handbook of Tropical And Sub-tropical Horticulture. Washington: Dept. of State, Agency for International Development, 1968.