Quisumbing, E. A., & Valmayor, H. L. (1981). The complete writings of Dr. Eduardo A. Quisumbing on Philippine orchids. Eugenio Lopez Foundation.
Chicago Style (17th ed.) CitationQuisumbing, Eduardo A., and Helen L. Valmayor. The Complete Writings of Dr. Eduardo A. Quisumbing on Philippine Orchids. Pasig, Metro Manila: Eugenio Lopez Foundation, 1981.
MLA citiranjeQuisumbing, Eduardo A., and Helen L. Valmayor. The Complete Writings of Dr. Eduardo A. Quisumbing on Philippine Orchids. Eugenio Lopez Foundation, 1981.
Opozorilo: Ti citati niso vedno 100% točni.