APA (7th ed.) Citation

U, S. P. (1971). [Chemical structure of local anesthetics used in dentistry]. Boletin de informacion dental, 31(238), 61.

Chicago Style (17th ed.) Citation

U, Sánchez Planells. "[Chemical Structure of Local Anesthetics Used in Dentistry]." Boletin De Informacion Dental 31, no. 238 (1971): 61.

MLA (9th ed.) Citation

U, Sánchez Planells. "[Chemical Structure of Local Anesthetics Used in Dentistry]." Boletin De Informacion Dental, vol. 31, no. 238, 1971, p. 61.