APA
3G E-Learning, . (2021). Illustrated Dictionary of Trigonometry. Chennai: 3G E-learning.
Chicago
3G E-Learning, . 2021. Illustrated Dictionary of Trigonometry. Chennai: 3G E-learning.
Harvard
3G E-Learning, . (2021). Illustrated Dictionary of Trigonometry. Chennai: 3G E-learning.
MLA
3G E-Learning, . Illustrated Dictionary of Trigonometry. Chennai: 3G E-learning. 2021.