Twenhofel, W. H. (1953). Invertebrata paleontology. McGraw Hill.
Chicago Style CitationTwenhofel, William H. Invertebrata Paleontology. McGraw Hill, 1953.
MLA CitationTwenhofel, William H. Invertebrata Paleontology. McGraw Hill, 1953.
Warning: These citations may not always be 100% accurate.