APA

Orstavik D., Ford T. R., . (1998). Essential endodontology. Oxford: Blackwell Science.

Chicago

Orstavik Dag, Ford Thomas R.Pitt, . 1998. Essential endodontology. Oxford: Blackwell Science.

Harvard

Orstavik D., Ford T. R., . (1998). Essential endodontology. Oxford: Blackwell Science.

MLA

Orstavik Dag, Ford Thomas R.Pitt, . Essential endodontology. Oxford: Blackwell Science. 1998.