Style de citation APA

Van Ggch, J. P. (1974). Applied general system theory. Harper and row.

Style de citation Chicago

Van Ggch, John P. Applied General System Theory. NewYork: Harper and row, 1974.

Style de citation MLA

Van Ggch, John P. Applied General System Theory. Harper and row, 1974.

Attention : ces citations peuvent ne pas être correctes à 100%.