Kumar, S. (2014). Diversity of Pteridophytes, Gymnosperms and Elementary Palaeobotany. Pragati Prakashan.
Citazione stile Chigago Style (17a edizione)Kumar, Satish. Diversity of Pteridophytes, Gymnosperms and Elementary Palaeobotany. Meerut: Pragati Prakashan, 2014.
Citatione MLA (9a ed.)Kumar, Satish. Diversity of Pteridophytes, Gymnosperms and Elementary Palaeobotany. Pragati Prakashan, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.