APA (7th ed.) Citation

Ashley, S., & Ashley, L. (1969). Hinda itik: Duck and his friends. Summer Institute of Linguistics-Philippines.

Chicago Style (17th ed.) Citation

Ashley, Seymour, and Lois Ashley. Hinda Itik: Duck and His Friends. [Malaybalay, Bukidnon]: Summer Institute of Linguistics-Philippines, 1969.

MLA (9th ed.) Citation

Ashley, Seymour, and Lois Ashley. Hinda Itik: Duck and His Friends. Summer Institute of Linguistics-Philippines, 1969.