Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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