Acta
Acta Botanica Fennica. -- 147: Macrolichens and their zonal distribution in Wells Gray Provincial Park and its vicinity, British Columbia, Canada (1992). -- Helsinki : Societas pro Fauna et Flora Fennica, 1992. -- ISBN : 951-9469-41-9. -- ISSN : 0001-5369.
flóra. fauna. botanika. odborné časopisy
581.9. 591.9. 58. (051)-027.561