Παραπομπή σε μορφή APA (7η εκδ.)

Ferrancullo, F. A. Types of questions asked by elementary school children about mathematics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ferrancullo, Felixberto A. Types of Questions Asked by Elementary School Children About Mathematics. Quezon City, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ferrancullo, Felixberto A. Types of Questions Asked by Elementary School Children About Mathematics.