APA
Mortensen E., Bullard E. T. & United States. (1964). Handbook of tropical and sub-tropical horticulture. Washington, D.C: Dept. of State, Agency for International Development Communications Resources Division, Publications and Technical Services Branch.
Chicago
Mortensen Ernest, Bullard Ervin T and United States. 1964. Handbook of tropical and sub-tropical horticulture. Washington, D.C: Dept. of State, Agency for International Development Communications Resources Division, Publications and Technical Services Branch.
Harvard
Mortensen E., Bullard E. T. and United States. (1964). Handbook of tropical and sub-tropical horticulture. Washington, D.C: Dept. of State, Agency for International Development Communications Resources Division, Publications and Technical Services Branch.
MLA
Mortensen Ernest, Bullard Ervin T and United States. Handbook of tropical and sub-tropical horticulture. Washington, D.C: Dept. of State, Agency for International Development Communications Resources Division, Publications and Technical Services Branch. 1964.