APA (7e ed.) Bronvermelding

(1993). Mcgraw-hill Encyclopedia Of Environmental Science & Engineering Editors In Chief: Sybil P.parker, Robert A. Carbitt. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Mcgraw-hill Encyclopedia Of Environmental Science & Engineering Editors In Chief: Sybil P.parker, Robert A. Carbitt. McGraw-Hill, 1993.

MLA (8e ed.) Bronvermelding

Mcgraw-hill Encyclopedia Of Environmental Science & Engineering Editors In Chief: Sybil P.parker, Robert A. Carbitt. McGraw-Hill, 1993.