Gaya APA

WAHYUDI, S. et al (2017). Stupid Marketing , Only Stupid Marketers Keep Learning (Cetakan Keempat). Hoboken, NJ: PT Gramedia Pustaka Utama.

Gaya MLA

WAHYUDI, Sandy. et al. "Stupid Marketing , Only Stupid Marketers Keep Learning". Cetakan Keempat Hoboken, NJ: PT Gramedia Pustaka Utama, 2017. Text.