APA引文

Cordero Cordero, G. (1980). Cyclical and linear conception of history.

Citación estilo Chicago

Cordero Cordero, Gerardo. Cyclical and Linear Conception of History. 1980.

MLA引文

Cordero Cordero, Gerardo. Cyclical and Linear Conception of History. 1980.

警告：這些引文格式不一定是100％准確.