APA (7th ed.) Citation

Selz, G. J., & Kämmerer, T. (2013). Trade posts and encampments as corner stones of exchange.

Chicago Style (17th ed.) Citation

Selz, Gebhard J., and Th.R Kämmerer. Trade Posts and Encampments as Corner Stones of Exchange. 2013.

MLA (8th ed.) Citation

Selz, Gebhard J., and Th.R Kämmerer. Trade Posts and Encampments as Corner Stones of Exchange. 2013.

Warning: These citations may not always be 100% accurate.