APA aipamena

Quitzon, B. P. (1972). Instructional materials for developing skills in writing. s.n].

Chicago Style aipamena

Quitzon, Beatriz Puzon. Instructional Materials for Developing Skills in Writing. [Quezon City: s.n], 1972.

MLA aipamena

Quitzon, Beatriz Puzon. Instructional Materials for Developing Skills in Writing. s.n], 1972.