Gaya APA

L, G, , J. et al (2006). Problem Solving in Endodontics: Prevention Identification and Management (4th.ed.). St. Louis: Mosby.

Gaya MLA

L, Gutmann, , James. et al. "Problem Solving in Endodontics: Prevention Identification and Management". 4th.ed. St. Louis: Mosby, 2006. Text.