Gupta, S. (2018). Digital Marketing. McGraw Hill Education (India) Private Limited.
Chicago (17e ed.) BronvermeldingGupta, Seema. Digital Marketing. Chennai: McGraw Hill Education (India) Private Limited, 2018.
MLA (9e ed.) BronvermeldingGupta, Seema. Digital Marketing. McGraw Hill Education (India) Private Limited, 2018.
Let op: Deze citaties zijn niet altijd 100% accuraat.