Li, M. S., Koh, W. H. Y., & Koch, P. L. T. (2008). Why waste plastic bags? Choose reusable bags!: Promotional campaign.
استشهاد بنمط شيكاغوLi, Melissa Shiying, Wynne Hui Yi Koh, و Pamela Lynn Tremain Koch. Why Waste Plastic Bags? Choose Reusable Bags!: Promotional Campaign. 2008.
MLA استشهادLi, Melissa Shiying, Wynne Hui Yi Koh, و Pamela Lynn Tremain Koch. Why Waste Plastic Bags? Choose Reusable Bags!: Promotional Campaign. 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.