CM Simatupang, Ervina, and Anum Dahlia. “Noun As Modifier in Nominal Group: A Functional Grammar Approach”. International Journal of Engineering & Technology 7, no. 4.34 (December 13, 2018): 331–335. Accessed November 25, 2024. https://sciencepubco.com/index.php/ijet/article/view/25306.