University of the Philippines National Sciences Development Board. (1965). Biology for Philippine High Schools : The Relationships of living things: Teacher's guide. Phoenix Publishing.
Chicago Style (17th ed.) CitationUniversity of the Philippines National Sciences Development Board. Biology for Philippine High Schools : The Relationships of Living Things: Teacher's Guide. Manila: Phoenix Publishing, 1965.
MLA (9th ed.) CitationUniversity of the Philippines National Sciences Development Board. Biology for Philippine High Schools : The Relationships of Living Things: Teacher's Guide. Phoenix Publishing, 1965.
Warning: These citations may not always be 100% accurate.