Nguyen Thi Thao Quynh LGN , NDNT. Relationship Marketing and Customer Loyalty in Vietnam Cosmetics Market. Int. j. soc. sci. humanit. invent. [Internet]. 2017 Jun. 15 [cited 2024 Oct. 2];4(6):3556-60. Available from: http://valleyinternational.net/index.php/theijsshi/article/view/818