Cita APA (7a ed.)

Chamberlain, M., & Johnson, K. A. (1983). Now for english. Activity book. Thomas Nelson.

Cita Chicago Style (17a ed.)

Chamberlain, Margaret, y Keith. Autor Johnson. Now for English. Activity Book. Hong Kong: Thomas Nelson, 1983.

Cita MLA (9a ed.)

Chamberlain, Margaret, y Keith. Autor Johnson. Now for English. Activity Book. Thomas Nelson, 1983.