Gaya APA
Ridwansyah, A. (2017).
Instant Marketing for Busy People: "Rangkuman Intisari Penasaran" .
jakarta:
Esensi Erlangga Group.
Gaya MLA
Ridwansyah, Ardhi.
"Instant Marketing for Busy People: "Rangkuman Intisari Penasaran"".
jakarta:
Esensi Erlangga Group,
2017.
Text.