APA
National Center for Construction Education and Research (U.S.), . (2002). Plumbing. level three : trainee guide. Upper Saddle River, NJ: Prentice Hall.
Chicago
National Center for Construction Education and Research (U.S.), . 2002. Plumbing. level three : trainee guide. Upper Saddle River, NJ: Prentice Hall.
Harvard
National Center for Construction Education and Research (U.S.), . (2002). Plumbing. level three : trainee guide. Upper Saddle River, NJ: Prentice Hall.
MLA
National Center for Construction Education and Research (U.S.), . Plumbing. level three : trainee guide. Upper Saddle River, NJ: Prentice Hall. 2002.