Citazione Stile APA (7a Edizione)

KAHN JOHN ELLISON. (1993). HOW TO WRITE AND SPEAK BETTER. READERS DIGEST.

Citazione stile Chigago Style (17a edizione)

KAHN JOHN ELLISON. HOW TO WRITE AND SPEAK BETTER. LONDON: READERS DIGEST, 1993.

Citatione MLA (9a ed.)

KAHN JOHN ELLISON. HOW TO WRITE AND SPEAK BETTER. READERS DIGEST, 1993.