Orr, R. T. (1968). Vertebrate biology. W.B. Saunders Comp.
Chicago Style (17th ed.) CitationOrr, Robert T. Vertebrate Biology. W.B. Saunders Comp, 1968.
MLA (8th ed.) CitationOrr, Robert T. Vertebrate Biology. W.B. Saunders Comp, 1968.
Warning: These citations may not always be 100% accurate.