Cortenbach, John W. and Madurapperuma, Buddhika D.
"Survey and Map Distribution of English Ivy (Hedera helix L.) at Patrick's Point State Park, California,"
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University: Vol. 2
, Article 6.
Available at: https://digitalcommons.humboldt.edu/ideafest/vol2/iss1/6