Van Ggch, J. P. (1974). Applied general system theory. Harper and row.
Chicago-stil citatVan Ggch, John P. Applied General System Theory. NewYork: Harper and row, 1974.
MLA-referensVan Ggch, John P. Applied General System Theory. Harper and row, 1974.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.