Cita APA (7th ed.)

Massey, H. C. (1982). Estimating plumbing costs.

Cita Chicago (17th ed.)

Massey, Howard C. Estimating Plumbing Costs. Craftsman Book, 1982.

Cita MLA (9th ed.)

Massey, Howard C. Estimating Plumbing Costs. 1982.