Cita APA (7th ed.)

CHAINES, M. H. (1980). Developing oral english skills: Spectrum of engliish 1. Glenchoe Publishing.

Cita Chicago (17th ed.)

CHAINES, Mary H. Developing Oral English Skills: Spectrum of Engliish 1. Enchino: Glenchoe Publishing, 1980.

Cita MLA (9th ed.)

CHAINES, Mary H. Developing Oral English Skills: Spectrum of Engliish 1. Glenchoe Publishing, 1980.