Cita APA (7th ed.)

Potter, M. (1990). Panorama: [level 3] (American-English ed.). Macmillan Publishers.

Cita Chicago (17th ed.)

Potter, Mike. Panorama: [level 3]. American-English ed. London: Macmillan Publishers, 1990.

Cita MLA (9th ed.)

Potter, Mike. Panorama: [level 3]. American-English ed. Macmillan Publishers, 1990.