APA

Mackenthun K. M., . (1973). Toward a cleaner aquatic environment. Washington: U.S. Govt. Print. Off.

Chicago

Mackenthun Kenneth M, . 1973. Toward a cleaner aquatic environment. Washington: U.S. Govt. Print. Off.

Harvard

Mackenthun K. M., . (1973). Toward a cleaner aquatic environment. Washington: U.S. Govt. Print. Off.

MLA

Mackenthun Kenneth M, . Toward a cleaner aquatic environment. Washington: U.S. Govt. Print. Off. 1973.