APA aipamena

Gregorio, H. C. (1976). Principles and methods of teaching (Rev. ed.). R. P. Garcia.

Chicago Style aipamena

Gregorio, Herman Cruz. Principles and Methods of Teaching. Rev. ed. Quezon City: R. P. Garcia, 1976.

MLA aipamena

Gregorio, Herman Cruz. Principles and Methods of Teaching. Rev. ed. R. P. Garcia, 1976.