APA (7th ed.) Citation

Morrill, R. L., Gaile, G. L., & Thrall, G. I. (1988). Spatial diffusion. Sage.

Chicago Style (17th ed.) Citation

Morrill, Richard L., Gary L. Gaile, and Grant Ian Thrall. Spatial Diffusion. Newbury Park, CA: Sage, 1988.

MLA (9th ed.) Citation

Morrill, Richard L., et al. Spatial Diffusion. Sage, 1988.