Παραπομπή σε μορφή APA (7η εκδ.)

Ball, J. A. (1978). Factorization and model theory for contraction operators with unitary part. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ball, Joseph A. Factorization and Model Theory for Contraction Operators with Unitary Part. Providence: American Mathematical Society, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ball, Joseph A. Factorization and Model Theory for Contraction Operators with Unitary Part. American Mathematical Society, 1978.