Cita APA (7a ed.)

(1968). BEC Higher: Teacher's resource pack (Revised ed.). Summertown Publishing.

Cita Chicago Style (17a ed.)

BEC Higher: Teacher's Resource Pack. Revised ed. Summertown: Summertown Publishing, 1968.

Cita MLA (9a ed.)

BEC Higher: Teacher's Resource Pack. Revised ed. Summertown Publishing, 1968.