APA引文

(1977). Human activity system: Its spatiotemporal structure. Tokyo: University of Tokyo Press.

Trích dẫn kiểu Chicago

Human Activity System: Its Spatiotemporal Structure. Tokyo: University of Tokyo Press, 1977.

MLA引文

Human Activity System: Its Spatiotemporal Structure. Tokyo: University of Tokyo Press, 1977.

警告：這些引文格式不一定是100％准確.