Cita APA (7th ed.)

(2002). The palaeobotanist. Birbal Sahni Institute of Palaeobotany.

Cita Chicago (17th ed.)

The Palaeobotanist. Lucknow: Birbal Sahni Institute of Palaeobotany, 2002.

Cita MLA (9th ed.)

The Palaeobotanist. Birbal Sahni Institute of Palaeobotany, 2002.