APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.