Gaya APA

Natural systems for waste management and treatment / Sherwood C. Reed, Ronald W. Crites, E. Joe Middlebrooks. (1995). : New York : McGraw-Hill.

Gaya MLA

Natural systems for waste management and treatment / Sherwood C. Reed, Ronald W. Crites, E. Joe Middlebrooks. 2nd ed.. : New York : McGraw-Hill, 1995. Text.