Gaya APA

Armstrong, G., Kotler;, P. (2023). Principles of marketing: nineteenth edition (Edisi ke-19 (Nineteenth Edition) - Global Edition). Harlow, Inggris: Pearson Education Limited.

Gaya MLA

Armstrong, Gary., Kotler;, Philip. "Principles of marketing: nineteenth edition". Edisi ke-19 (Nineteenth Edition) - Global Edition Harlow, Inggris: Pearson Education Limited, 2023. Text.