Παραπομπή σε μορφή APA (7η εκδ.)

Perfecto, F. E. A. (1987). Differences on the perceptual behavior of two age-group preschool children on their learning environment. University of the Philippines, College of Home Economics].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Perfecto, Francia Efiginia A. Differences on the Perceptual Behavior of Two Age-group Preschool Children on Their Learning Environment. [Quezon City: University of the Philippines, College of Home Economics], 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Perfecto, Francia Efiginia A. Differences on the Perceptual Behavior of Two Age-group Preschool Children on Their Learning Environment. University of the Philippines, College of Home Economics], 1987.