Kumar, S. (2014). Diversity of Pteridophytes, Gymnosperms and Elementary Palaeobotany. Pragati Prakashan.
Cita Chicago (17th ed.)Kumar, Satish. Diversity of Pteridophytes, Gymnosperms and Elementary Palaeobotany. Meerut: Pragati Prakashan, 2014.
Cita MLA (9th ed.)Kumar, Satish. Diversity of Pteridophytes, Gymnosperms and Elementary Palaeobotany. Pragati Prakashan, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.