Bird, D. (2008). Commonsense Direct and Digital Marketing (5th.). Kogan Page India Private Limited.
Chicago (17e ed.) BronvermeldingBird, Drayton. Commonsense Direct and Digital Marketing. 5th. New Delhi: Kogan Page India Private Limited, 2008.
MLA (9e ed.) BronvermeldingBird, Drayton. Commonsense Direct and Digital Marketing. 5th. Kogan Page India Private Limited, 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.