Cita APA (7a ed.)

Vallins, G. H. (1960). The best english. (1a. ed.). The English language book society.

Cita Chicago Style (17a ed.)

Vallins, G. H. The Best English. 1a. ed. Londres: The English language book society, 1960.

Cita MLA (9a ed.)

Vallins, G. H. The Best English. 1a. ed. The English language book society, 1960.