Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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