Dyfyniad APA

Pratt, H. S. (1951). Manual of the common invertebrate animals. Blakiston.

Dyfyniad Arddull Chicago

Pratt, Henery Sherring. Manual of the Common Invertebrate Animals. Philadelphia: Blakiston, 1951.

Dyfyniad MLA

Pratt, Henery Sherring. Manual of the Common Invertebrate Animals. Blakiston, 1951.

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