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Brown, Heidi E., Laura C. Harrington, Phillip E. Kaufman, Tanja McKay, Dwight D. Bowman, C Thomas Nelson, Dongmei Wang, und Robert Lund. Key Factors Influencing Canine Heartworm, Dirofilaria Immitis, in the United States. BioMed Central, 2012.

Brown, Heidi E., et al. Key Factors Influencing Canine Heartworm, Dirofilaria Immitis, in the United States. BioMed Central, 2012.