Garg, S. (1987). Gentianaceae of the north west Himalaya, a revision. Today & Tomorrow's Printers and Publishers.
Citazione stile Chigago Style (17a edizione)Garg, Sunita. Gentianaceae of the North West Himalaya, a Revision. New Delhi: Today & Tomorrow's Printers and Publishers, 1987.
Citatione MLA (9a ed.)Garg, Sunita. Gentianaceae of the North West Himalaya, a Revision. Today & Tomorrow's Printers and Publishers, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.