Citazione Stile APA (7a Edizione)

JEFKINS FRANK. (1989). PUBLIC RELATIONS TECHNIQUES. HEINEMANN.

Citazione stile Chigago Style (17a edizione)

JEFKINS FRANK. PUBLIC RELATIONS TECHNIQUES. OXFORD: HEINEMANN, 1989.

Citatione MLA (9a ed.)

JEFKINS FRANK. PUBLIC RELATIONS TECHNIQUES. HEINEMANN, 1989.