Cita APA (7th ed.)

RYAN CHRISTOPHER. (2002). HIGH PERFORMANCE INTERACTIVE MARKETING. VIVA BOOKS PVT.LTD.

Cita Chicago (17th ed.)

RYAN CHRISTOPHER. HIGH PERFORMANCE INTERACTIVE MARKETING. MUMBAI: VIVA BOOKS PVT.LTD, 2002.

Cita MLA (9th ed.)

RYAN CHRISTOPHER. HIGH PERFORMANCE INTERACTIVE MARKETING. VIVA BOOKS PVT.LTD, 2002.