APA
Perdue E. M., Giessing E T, . (1990). Organic Acids in Aquatic Ecosystems. \N: Wiley.
Chicago
Perdue E M, Giessing E T, . 1990. Organic Acids in Aquatic Ecosystems. \N: Wiley.
Harvard
Perdue E. M., Giessing E T, . (1990). Organic Acids in Aquatic Ecosystems. \N: Wiley.
MLA
Perdue E M, Giessing E T, . Organic Acids in Aquatic Ecosystems. \N: Wiley. 1990.