Gaya APA

Sawyer, C, N., McCarty, P, L, (. (1994). Chemistry for Environmental Engineering, 4th-ed . New York: McGraw-Hill Inc..

Gaya MLA

Sawyer, Clair, N., McCarty, Perry, L, (a.o). "Chemistry for Environmental Engineering, 4th-ed". New York: McGraw-Hill Inc., 1994. Text.