Willoughby, D. A., Woodson, R. D., & Sutherland, R. (2002). Plastic piping handbook (First edition.). McGraw-Hill.
Chicago Style aipamenaWilloughby, David A., R. Dodge Woodson, and Rick Sutherland. Plastic Piping Handbook. First edition. New York: McGraw-Hill, 2002.
MLA aipamenaWilloughby, David A., et al. Plastic Piping Handbook. First edition. McGraw-Hill, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.