V. E. Dent; R. A. D. Williams (1 Jul 1984). "Actinomyces howellii, a New Species from the Dental Plaque of Dairy Cattle". International Journal of Systematic Bacteriology (بالإنجليزية). 34 (3): 316–320. DOI:10.1099/00207713-34-3-316. ISSN:0020-7713. QID:Q45309147.
V. E. Dent; R. A. D. Williams (1 Jul 1984). "Actinomyces howellii, a New Species from the Dental Plaque of Dairy Cattle". International Journal of Systematic Bacteriology (بالإنجليزية). 34 (3): 316–320. DOI:10.1099/00207713-34-3-316. ISSN:0020-7713. QID:Q45309147.
worldcat.org
V. E. Dent; R. A. D. Williams (1 Jul 1984). "Actinomyces howellii, a New Species from the Dental Plaque of Dairy Cattle". International Journal of Systematic Bacteriology (بالإنجليزية). 34 (3): 316–320. DOI:10.1099/00207713-34-3-316. ISSN:0020-7713. QID:Q45309147.