APA (7th ed.) Citation

Bonus, E. A., Gamboa, L. O., & Manuel, A. J. (1975). A content analysis of the book Biology for the Space Age (Philippine edition) textbook and laboratory manual workbook.

Chicago Style (17th ed.) Citation

Bonus, Elmyra A., Luviminda O. Gamboa, and Alberto J. Manuel. A Content Analysis of the Book Biology for the Space Age (Philippine Edition) Textbook and Laboratory Manual Workbook. 1975.

MLA (9th ed.) Citation

Bonus, Elmyra A., et al. A Content Analysis of the Book Biology for the Space Age (Philippine Edition) Textbook and Laboratory Manual Workbook. 1975.

Warning: These citations may not always be 100% accurate.