APA (7th ed.) Citation

Rigby, J. K., & Nitecki, M. H. (1968). Annotated bibliography of Lower Paleozoic sponges of North America. Field Museum of Natural History.

Chicago Style (17th ed.) Citation

Rigby, J. Keith, and Matthew H. Nitecki. Annotated Bibliography of Lower Paleozoic Sponges of North America. Chicago, Ill: Field Museum of Natural History, 1968.

MLA (9th ed.) Citation

Rigby, J. Keith, and Matthew H. Nitecki. Annotated Bibliography of Lower Paleozoic Sponges of North America. Field Museum of Natural History, 1968.