APA (7th ed.) Citation

De la Cruz, B. B., & Blas, A. B. (1976). Chemistry in Man's environment. Bookman.

Chicago Style (17th ed.) Citation

De la Cruz, Betty Buan, and Alice Buan Blas. Chemistry in Man's Environment. [Quezon City]: Bookman, 1976.

MLA (9th ed.) Citation

De la Cruz, Betty Buan, and Alice Buan Blas. Chemistry in Man's Environment. Bookman, 1976.