Cita APA (7a ed.)

Seligson, P. (2009). Essential english course: 1 : beginner : coursebook with CD-ROM. Richmond.

Cita Chicago Style (17a ed.)

Seligson, Paul. Essential English Course: 1 : Beginner : Coursebook with CD-ROM. Oxford: Richmond, 2009.

Cita MLA (9a ed.)

Seligson, Paul. Essential English Course: 1 : Beginner : Coursebook with CD-ROM. Richmond, 2009.