APA (7th ed.) Citation

Realuyo, Z. M., & Del Pan-Ilarde, I. (1982). Today's basic concepts in earth science. Goodwill Trading Co., Inc.

Chicago Style (17th ed.) Citation

Realuyo, Zenaida Montecastro, and Isabelina Del Pan-Ilarde. Today's Basic Concepts in Earth Science. Manila: Goodwill Trading Co., Inc, 1982.

MLA (9th ed.) Citation

Realuyo, Zenaida Montecastro, and Isabelina Del Pan-Ilarde. Today's Basic Concepts in Earth Science. Goodwill Trading Co., Inc, 1982.