Johnson, G. B. (2010). Essentials of the living world. McGraw Hill.
Trích dẫn kiểu ChicagoJohnson, George B. Essentials of the Living World. McGraw Hill, 2010.
MLA CitationJohnson, George B. Essentials of the Living World. McGraw Hill, 2010.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.