Cita APA (7a ed.)

Bermúdez, J., & Veirano, G. (1988). Parks' modified technique for treatment of upper and medium transphincteral fistula.

Cita Chicago Style (17a ed.)

Bermúdez, Jorge, y Gustavo Veirano. Parks' Modified Technique for Treatment of Upper and Medium Transphincteral Fistula. 1988.

Cita MLA (9a ed.)

Bermúdez, Jorge, y Gustavo Veirano. Parks' Modified Technique for Treatment of Upper and Medium Transphincteral Fistula. 1988.