APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.