APA
S.M. Mathur, . (2015). Guide to Field Geology. New Delhi: PHI.
Chicago
S.M. Mathur, . 2015. Guide to Field Geology. New Delhi: PHI.
Harvard
S.M. Mathur, . (2015). Guide to Field Geology. New Delhi: PHI.
MLA
S.M. Mathur, . Guide to Field Geology. New Delhi: PHI. 2015.