Παραπομπή APA

Rogers John J.W. and Feiss Geofrey P. (1998). People and earth. CUP.

Παραπομπή Chicago Style

Rogers John J.W. and Feiss Geofrey P. People and Earth. NewYork: CUP, 1998.

Παραπομπή MLA

Rogers John J.W. and Feiss Geofrey P. People and Earth. CUP, 1998.