Gaya APA
Zulkifli, A. (2020).
Green Marketing : Redefinisi Green Product, Green Price, Green Place dan Green Promotion .
Yogjakarta:
Graha Ilmu.
Gaya MLA
Zulkifli, Arif.
"Green Marketing : Redefinisi Green Product, Green Price, Green Place dan Green Promotion".
Yogjakarta:
Graha Ilmu,
2020.
Text.