Cita APA (7a ed.)

Kanelli, S. (1978). Practice in proficiency english (1st. ed.). Evans Brothers.

Cita Chicago Style (17a ed.)

Kanelli, Sheelagh. Practice in Proficiency English. 1st. ed. London: Evans Brothers, 1978.

Cita MLA (9a ed.)

Kanelli, Sheelagh. Practice in Proficiency English. 1st. ed. Evans Brothers, 1978.