Pant, D. D., Osborne, R., & Birbal Sahni Institute of Palaeobotany. (2002). An introduction to gymnosperms, cycas, and cycadales. Birbal Sahni Institute of Palaeobotany.
Chicago Style (17th ed.) CitationPant, Divya Darshan, Roy Osborne, and Birbal Sahni Institute of Palaeobotany. An Introduction to Gymnosperms, Cycas, and Cycadales. Lucknow: Birbal Sahni Institute of Palaeobotany, 2002.
MLA (8th ed.) CitationPant, Divya Darshan, et al. An Introduction to Gymnosperms, Cycas, and Cycadales. Birbal Sahni Institute of Palaeobotany, 2002.
Warning: These citations may not always be 100% accurate.