APA (7e ed.) Bronvermelding

Welch, P. S. (1948). Limnological methods. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Welch, Paul S. Limnological Methods. New York, USA: McGraw-Hill, 1948.

MLA (9e ed.) Bronvermelding

Welch, Paul S. Limnological Methods. McGraw-Hill, 1948.