Nitaya Jotikasthira. 1989. The effect on root surfaces of sonic ultrasonic and reciprocating scalers. Field of Study Periodontology, University of Bergen;
Nitaya Jotikasthira. (1989) The effect on root surfaces of sonic ultrasonic and reciprocating scalers . University of Bergen/Bergen.
Nitaya Jotikasthira. The effect on root surfaces of sonic ultrasonic and reciprocating scalers. . Bergen:University of Bergen, 1989.
Nitaya Jotikasthira. (1989) The effect on root surfaces of sonic ultrasonic and reciprocating scalers . University of Bergen/Bergen.