Cita APA (7a ed.)

Lehmann, W. P., & Malkiel, Y. (1971). Directions for historical linguistics: A symposium. University of Texas Press.

Cita Chicago Style (17a ed.)

Lehmann, Winfred P., y Yakov Malkiel. Directions for Historical Linguistics: A Symposium. Austin [etc.]: University of Texas Press, 1971.

Cita MLA (9a ed.)

Lehmann, Winfred P., y Yakov Malkiel. Directions for Historical Linguistics: A Symposium. University of Texas Press, 1971.