Cita APA (7a ed.)

Eckersley, C. E. (1967). Essential English for foreign students: Teacher's book . Book four (Rev. ed.). Longmans.

Cita Chicago Style (17a ed.)

Eckersley, C. E. Essential English for Foreign Students: Teacher's Book . Book Four. Rev. ed. London [etc.]: Longmans, 1967.

Cita MLA (9a ed.)

Eckersley, C. E. Essential English for Foreign Students: Teacher's Book . Book Four. Rev. ed. Longmans, 1967.