Mortensen, E., & Bullard, E. T. (1964). Handbook of tropical and sub - tropical horticulture. Publications and Technical Services Branch, Department of State.
Cita Chicago Style (17a ed.)Mortensen, Ernest, y Ervin T. Bullard. Handbook of Tropical and Sub - Tropical Horticulture. Washington: Publications and Technical Services Branch, Department of State, 1964.
Cita MLA (8a ed.)Mortensen, Ernest, y Ervin T. Bullard. Handbook of Tropical and Sub - Tropical Horticulture. Publications and Technical Services Branch, Department of State, 1964.
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