Cita APA (7th ed.)

GAJJAR, D. (1992). PRINCIPLES OF COMMUNICATION. STUDENT BOOK DEPOT.

Cita Chicago (17th ed.)

GAJJAR, D. PRINCIPLES OF COMMUNICATION. MUMBAI: STUDENT BOOK DEPOT, 1992.

Cita MLA (9th ed.)

GAJJAR, D. PRINCIPLES OF COMMUNICATION. STUDENT BOOK DEPOT, 1992.