Παραπομπή σε μορφή APA (7η εκδ.)

PUFFETT, R. (1991). Plumbing Services Mechanical Services Air Conditioning Rj Puffett, Lj. Hossack. McGraw-Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

PUFFETT, RJ. Plumbing Services Mechanical Services Air Conditioning Rj Puffett, Lj. Hossack. McGraw-Hill, 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

PUFFETT, RJ. Plumbing Services Mechanical Services Air Conditioning Rj Puffett, Lj. Hossack. McGraw-Hill, 1991.