Robert G Franke. Man and the changing environment.
Trích dẫn kiểu ChicagoRobert G Franke. Man and the Changing Environment.
MLA引文Robert G Franke. Man and the Changing Environment.
警告：這些引文格式不一定是100％准確.
APA引文
Robert G Franke. Man and the changing environment.
Trích dẫn kiểu ChicagoRobert G Franke. Man and the Changing Environment.
MLA引文Robert G Franke. Man and the Changing Environment.