Cita APA (7a ed.)

Beile, W. (1979). Learning english: Modern course. EPU Loyola.

Cita Chicago Style (17a ed.)

Beile, Werner. Learning English: Modern Course. São Paulo, SP: EPU Loyola, 1979.

Cita MLA (9a ed.)

Beile, Werner. Learning English: Modern Course. EPU Loyola, 1979.