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Gymnadenia conopsea. In: POWO = Plants of the World Online von Board of Trustees of the Royal Botanic Gardens, Kew: Kew Science, abgerufen am 1. Dezember 2016..
Franz K. Huber, Roman Kaiser, Willi Sauter, Florian P. Schiestl: Floral scent emission and pollinator attraction in two species of Gymnadenia (Orchidaceae). In: Oecologia, Band 142, 2005, S. 564–575, doi:10.1007/s00442-004-1750-9 (PDF).