APA

Groombridge B., Mace G. & Rabb G. (1993). 1994 IUCN red list of threatened animals. Cambridge: IUCN.

Chicago

Groombridge Brian, Mace Georgina and Rabb George. 1993. 1994 IUCN red list of threatened animals. Cambridge: IUCN.

Harvard

Groombridge B., Mace G. and Rabb G. (1993). 1994 IUCN red list of threatened animals. Cambridge: IUCN.

MLA

Groombridge Brian, Mace Georgina and Rabb George. 1994 IUCN red list of threatened animals. Cambridge: IUCN. 1993.