Cita APA (7th ed.)

Willoughby, D. A., Woodson, R. D., & Sutherland, R. (2002). Plastic piping handbook. McGraw-Hill.

Cita Chicago (17th ed.)

Willoughby, David A., R. Dodge Woodson, i Rick Sutherland. Plastic Piping Handbook. New York: McGraw-Hill, 2002.

Cita MLA (9th ed.)

Willoughby, David A., et al. Plastic Piping Handbook. McGraw-Hill, 2002.