Cita APA (7a ed.)

Beile, W. (1982). Learning english: Modern course: intermediate. EPU.

Cita Chicago Style (17a ed.)

Beile, Werner. Learning English: Modern Course: Intermediate. São Paulo, SP: EPU, 1982.

Cita MLA (9a ed.)

Beile, Werner. Learning English: Modern Course: Intermediate. EPU, 1982.