APA (7th ed.) Citation

Katarzyna Pisanski, Agnieszka Sorokowska, Piotr Sorokowski, & Nicola Bruno. (2018). Understanding Selfies. Frontiers Media SA.

Chicago Style (17th ed.) Citation

Katarzyna Pisanski, Agnieszka Sorokowska, Piotr Sorokowski, and Nicola Bruno. Understanding Selfies. Frontiers Media SA, 2018.

MLA (9th ed.) Citation

Katarzyna Pisanski, et al. Understanding Selfies. Frontiers Media SA, 2018.

Warning: These citations may not always be 100% accurate.