Cita APA

Sheeler, W. D. (1971). Elementary course in english 2. Portland, Or.: English Language Services.

Citación estilo Chicago

Sheeler, Willard D. Elementary Course in English 2. Portland, Or.: English Language Services, 1971.

Cita MLA

Sheeler, Willard D. Elementary Course in English 2. Portland, Or.: English Language Services, 1971.

Precaución: Estas citas no son 100% exactas.