University of the Philippines, Quezon City, Institute for Science and Mathematics. Earth Science Project Team. (1987). Earth science : the Philippines in focus: Teacher's guide. The Institute.
Цитирование в стиле Чикаго (17-е изд.)University of the Philippines, Quezon City, Institute for Science and Mathematics. Earth Science Project Team. Earth Science : The Philippines in Focus: Teacher's Guide. Quezon City: The Institute, 1987.
Цитирование MLA (9-е изд.)University of the Philippines, Quezon City, Institute for Science and Mathematics. Earth Science Project Team. Earth Science : The Philippines in Focus: Teacher's Guide. The Institute, 1987.
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