Cita APA (7a ed.)

Fittkau, E. J., Illies, J., Klinge, H., Schwabe, G. H., & Sioli, H. (1969). Biogeography and ecology in south America. W. Junk N. V.

Cita Chicago Style (17a ed.)

Fittkau, E. J., J. Illies, H. Klinge, G. H. Schwabe, y H. Sioli. Biogeography and Ecology in South America. Amsterdam: W. Junk N. V, 1969.

Cita MLA (9a ed.)

Fittkau, E. J., et al. Biogeography and Ecology in South America. W. Junk N. V, 1969.