Collett , H., & Hooker, J. D. (1921). Flora simlensis: A handbook of the flowering plants of Simla and the neighbourhood. Thacker, Spink.
Chicago-viite (17. p.)Collett , Henry, ja Joseph D. Hooker. Flora Simlensis: A Handbook of the Flowering Plants of Simla and the Neighbourhood. Calcutta: Thacker, Spink, 1921.
MLA-viite (9. p.)Collett , Henry, ja Joseph D. Hooker. Flora Simlensis: A Handbook of the Flowering Plants of Simla and the Neighbourhood. Thacker, Spink, 1921.
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