APA Edition Citation

Davis, S. N., Pe strong, R., & Reitan, P. H. (1976). Geology our physical environment. Mc Graw Hill Book company.

Chicago Edition Citation

Davis, S N., R. Pe strong, and P H. Reitan. Geology Our Physical Environment. NewYork: Mc Graw Hill Book company, 1976.

MLA Edition Citation

Davis, S N., et al. Geology Our Physical Environment. Mc Graw Hill Book company, 1976.