University of the Philippines, N. S. D. B. (1965). Biology for Philippine high Schools: The relationships of living things. Phoenix Publishing House.
Chicago Style (17th ed.) CitationUniversity of the Philippines, National Science Development Board. Biology for Philippine High Schools: The Relationships of Living Things. Manila: Phoenix Publishing House, 1965.
MLA (9th ed.) CitationUniversity of the Philippines, National Science Development Board. Biology for Philippine High Schools: The Relationships of Living Things. Phoenix Publishing House, 1965.
Warning: These citations may not always be 100% accurate.