Gaya APA

Helianthushonfri, J. (2021). 15+ Social Media Marketing Apps (Ed 1 Cet 1). Yogyakarta: Elex Media Komputindo.

Gaya MLA

Helianthushonfri, Jefferly. "15+ Social Media Marketing Apps". Ed 1 Cet 1 Yogyakarta: Elex Media Komputindo, 2021. Text.