APA (7e ed.) Bronvermelding

PUFFETT, R. (1990). Plumbing services volume 2, waste disposal, roof plumbing 2nd ed. McGraw Hill.

Chicago (17e ed.) Bronvermelding

PUFFETT, RJ. Plumbing Services Volume 2, Waste Disposal, Roof Plumbing 2nd Ed. McGraw Hill, 1990.

MLA (8e ed.) Bronvermelding

PUFFETT, RJ. Plumbing Services Volume 2, Waste Disposal, Roof Plumbing 2nd Ed. McGraw Hill, 1990.

Let op: Deze citaties zijn niet altijd 100% accuraat.