Παραπομπή σε μορφή APA (7η εκδ.)

Byers, A., & Liu, P. (2008). Value-adding standards in the North American food market: Trade opportunities in certified products for developing countries.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Byers, Alice, και Pascal Liu. Value-adding Standards in the North American Food Market: Trade Opportunities in Certified Products for Developing Countries. 2008.

Παραπομπή σε μορφή MLA (9th εκδ.)

Byers, Alice, και Pascal Liu. Value-adding Standards in the North American Food Market: Trade Opportunities in Certified Products for Developing Countries. 2008.