Cita APA (7th ed.)

Wetzel, R. G., & Likens, G. E. (1991). Limnological analyses (2a. ed.). Springer Verlag.

Cita Chicago (17th ed.)

Wetzel, Robert G., i Gene E. Likens. Limnological Analyses. 2a. ed. Nueva York: Springer Verlag, 1991.

Cita MLA (9th ed.)

Wetzel, Robert G., i Gene E. Likens. Limnological Analyses. 2a. ed. Springer Verlag, 1991.