APA (7th ed.) Citation

3G E-learning LLC, USA, & 3G E-learning LLC, USA. (2017). Digital marketing. 3G E-Learning LLC, USA.

Chicago Style (17th ed.) Citation

3G E-learning LLC, USA, and USA 3G E-learning LLC. Digital Marketing. [Place of publication not identified]: 3G E-Learning LLC, USA, 2017.

MLA (9th ed.) Citation

3G E-learning LLC, USA, and USA 3G E-learning LLC. Digital Marketing. 3G E-Learning LLC, USA, 2017.