Sancho, L. G., Schroeter, B., & Valladares, F. (1998). Umbilicaria kappeni (Umbilicariaceae) a new lichen species from Antarctica with multiple mechanisms for the simultaneous dispersal of both symbionts. Nova Hedwigia, 67(3-4), 279.
Chicago Style (17th ed.) CitationSancho, Leopoldo G., B. Schroeter, and F. Valladares. "Umbilicaria Kappeni (Umbilicariaceae) a New Lichen Species from Antarctica with Multiple Mechanisms for the Simultaneous Dispersal of Both Symbionts." Nova Hedwigia 67, no. 3-4 (1998): 279.
MLA (8th ed.) CitationSancho, Leopoldo G., et al. "Umbilicaria Kappeni (Umbilicariaceae) a New Lichen Species from Antarctica with Multiple Mechanisms for the Simultaneous Dispersal of Both Symbionts." Nova Hedwigia, vol. 67, no. 3-4, 1998, p. 279.
Warning: These citations may not always be 100% accurate.