L.Usinger, T. I. a. R. (1961). ELEMENT OF ZOOLOGY;2ND ED. McMGraw-Hill Book Company,Inc.
Chicago Style (17th ed.) CitationL.Usinger, Tracy I.Storer and Robert. ELEMENT OF ZOOLOGY;2ND ED. McMGraw-Hill Book Company,Inc, 1961.
MLA (8th ed.) CitationL.Usinger, Tracy I.Storer and Robert. ELEMENT OF ZOOLOGY;2ND ED. McMGraw-Hill Book Company,Inc, 1961.
Warning: These citations may not always be 100% accurate.