APA-referens (7:e uppl.)

Crawford, C. S., Campbell, M. L., Schaedla, W. H., & Wood, S. (1989). Assemblage organization of surface-active arthropods along horizontal moisture gradients in a coastal Sonoran Desert ecosystem. Instituto de Ecología, A.C.

Chicago-referens (17:e uppl.)

Crawford, Clifford S., Mariel L. Campbell, William H. Schaedla, och Sarah Wood. Assemblage Organization of Surface-active Arthropods Along Horizontal Moisture Gradients in a Coastal Sonoran Desert Ecosystem. Instituto de Ecología, A.C, 1989.

MLA-referens (9:e uppl.)

Crawford, Clifford S., et al. Assemblage Organization of Surface-active Arthropods Along Horizontal Moisture Gradients in a Coastal Sonoran Desert Ecosystem. Instituto de Ecología, A.C, 1989.