Cita APA (7th ed.)
Doty, G. G., & I. Ross, J. Languaje and life in the U.S.A: American english for foreign students / [por] Gladys G. Doty, Janet Ross (2a edición.).
Cita Chicago (17th ed.)
Doty, Gladys G., i Janeth I. Ross. Languaje and Life in the U.S.A: American English for Foreign Students / [por] Gladys G. Doty, Janet Ross. 2a edición.
Cita MLA (9th ed.)
Doty, Gladys G., i Janeth I. Ross. Languaje and Life in the U.S.A: American English for Foreign Students / [por] Gladys G. Doty, Janet Ross. 2a edición.
Atenció: Aquestes cites poden no estar 100% correctes.