APA Edition Citation

OrvigTor. (1967). Current problems of lower vertabrate phylogeny. Inter Science.

Chicago Edition Citation

OrvigTor. Current Problems of Lower Vertabrate Phylogeny. Inter Science, 1967.

MLA Edition Citation

OrvigTor. Current Problems of Lower Vertabrate Phylogeny. Inter Science, 1967.

Warning: These citations may not always be 100% accurate.