APA (7th ed.) Citation

Greef, D. d. (2019). Discount usage in online sales: Insights from a Portuguese retailer.

Chicago Style (17th ed.) Citation

Greef, Douwe de. Discount Usage in Online Sales: Insights from a Portuguese Retailer. 2019.

MLA (8th ed.) Citation

Greef, Douwe de. Discount Usage in Online Sales: Insights from a Portuguese Retailer. 2019.

Warning: These citations may not always be 100% accurate.