Cita APA

Keaton, P., Berlin, C., & Markham, L. (1983). Grammar & composition: Scope english, level three. New York: Scholastic Book Services.

Citación estilo Chicago

Keaton, Phyllis, Carole Berlin, y Louis Markham. Grammar & Composition: Scope English, Level Three. New York: Scholastic Book Services, 1983.

Cita MLA

Keaton, Phyllis, Carole Berlin, y Louis Markham. Grammar & Composition: Scope English, Level Three. New York: Scholastic Book Services, 1983.