1. “Anaerobic Laboratory Manual,” 4th Ed., ed. by L. V. Holdeman, E. P. Cato and W. E. C. Moore, V. P. I. Anaerobic Laboratory, Virginia Polytechnic Institute, 1977, pp. 125~152.
2. G. Gottschalk, J. P. Andressen and H. Hippe, “The Prokaryotes,” Vol. II, ed. by M. P. Starr, H. Stolp, H. G. Truper, A. Balows and H. G. Schlegel, Springer-Verlag, New York, N. Y., 1981, pp. 1767~1803.
3. “Bergey’s Manual of Determinative Bacteriology,” 8th Ed., The Williams and Wilkins Co., Baltimore, 1974, pp. 552~572.