APA Style
Leu, A., Shen, G, Y.
(2021).
Learning English & Grammar Workbook 1
.
Singapura:
Mentari Books.
MLA Style
Leu, Angela., Shen, Gan, Yi.
"Learning English & Grammar Workbook 1".
Singapura:
Mentari Books,
2021.
Textbook.