Shrock, R. (1953). Principles of invertebrate paleontology. Mc Graw Hill Book company.
Chicago Edition CitationShrock, R.R. Principles of Invertebrate Paleontology. NewYork: Mc Graw Hill Book company, 1953.
MLA Edition CitationShrock, R.R. Principles of Invertebrate Paleontology. Mc Graw Hill Book company, 1953.
Warning: These citations may not always be 100% accurate.