APA
Mahapatra G. B., . (2020). Text Book of Geology. DELHI: C. B. S. Pvt. Ltd.
Chicago
Mahapatra G B, . 2020. Text Book of Geology. DELHI: C. B. S. Pvt. Ltd.
Harvard
Mahapatra G. B., . (2020). Text Book of Geology. DELHI: C. B. S. Pvt. Ltd.
MLA
Mahapatra G B, . Text Book of Geology. DELHI: C. B. S. Pvt. Ltd. 2020.