APA (7th ed.) Citation

Niehaus, T. F., Ripper, C. L., & Savage, V. (1984). A field guide to southwestern and Texas wildflowers. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Niehaus, Theodore F., Charles L. Ripper, and Virginia Savage. A Field Guide to Southwestern and Texas Wildflowers. Boston: Houghton Mifflin, 1984.

MLA (9th ed.) Citation

Niehaus, Theodore F., et al. A Field Guide to Southwestern and Texas Wildflowers. Houghton Mifflin, 1984.