Dyfyniad APA

EASTON, L. B., KLEIN, M., & ALLEN, H. B. (1981). Expresswaya: A basal language program level 5. The Economy Co.

Dyfyniad Arddull Chicago

EASTON, Lois Brown, Marvin KLEIN, and Harold B. ALLEN. Expresswaya: A Basal Language Program Level 5. Oklahoma City: The Economy Co, 1981.

Dyfyniad MLA

EASTON, Lois Brown, et al. Expresswaya: A Basal Language Program Level 5. The Economy Co, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.