Gaya APA

Phillips, R, W. (1977). Element of dental Materials for Dental Hygienist and Assistants (3rd Edition). Philadelphia: W. B. Saunders Company.

Gaya MLA

Phillips, Ralph, W.. "Element of dental Materials for Dental Hygienist and Assistants". 3rd Edition Philadelphia: W. B. Saunders Company, 1977. Text.