APA

Luddecke H., Amézquita A., Guzmán F., Bernal X. & Agudelo L. (1998). Comparison of environmental conditions and their effects on call characteristics of five frog species in a colombian highland community. Francia: SEH.

Chicago

Luddecke Horst, Amézquita Adolfo, Guzmán Francisco, Bernal Ximena and Agudelo Liza. 1998. Comparison of environmental conditions and their effects on call characteristics of five frog species in a colombian highland community. Francia: SEH.

Harvard

Luddecke H., Amézquita A., Guzmán F., Bernal X. and Agudelo L. (1998). Comparison of environmental conditions and their effects on call characteristics of five frog species in a colombian highland community. Francia: SEH.

MLA

Luddecke Horst, Amézquita Adolfo, Guzmán Francisco, Bernal Ximena and Agudelo Liza. Comparison of environmental conditions and their effects on call characteristics of five frog species in a colombian highland community. Francia: SEH. 1998.