Gaya APA

Williamson, H, T, M, D., Cohen, E. (2007). Atlas of Cosmetic and Recontructive Periodontal Surgery (Third Edition). Hamilton: BC Decker Inc.

Gaya MLA

Williamson, H., T., Mann,, D.., Cohen, Edwards. "Atlas of Cosmetic and Recontructive Periodontal Surgery". Third Edition Hamilton: BC Decker Inc, 2007. Text.