Johnson, G. B. (. B. (2000). The living world. McGraw-Hill.
Trích dẫn kiểu ChicagoJohnson, George B. (George Brooks). The Living World. McGraw-Hill, 2000.
MLA CitationJohnson, George B. (George Brooks). The Living World. McGraw-Hill, 2000.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.