Burkhardt, A., Maerker, R. A colour atlas of oral cancers. Chicago: Wolfe Medical Publications, 1981 186 p. 0-7234-0769-X.
Burkhardt, A., Maerker, R. A colour atlas of oral cancers. Chicago: Wolfe Medical Publications, 1981 186 p. 0-7234-0769-X.
Burkhardt, A., Maerker, R. (1981) A colour atlas of oral cancers, Chicago: Wolfe Medical Publications 186 p. 0-7234-0769-X.
Burkhardt, A., & Maerker, R. (1981). A colour atlas of oral cancers. The diagnosis and classification of leukoplakias, precancerous conditions and carcinomas. Chicago: Wolfe Medical Publications, 186 p.
Burkhardt A, Maerker R. A colour atlas of oral cancers: The diagnosis and classification of leukoplakias, precancerous conditions and carcinomas. Chicago: Wolfe Medical Publications; 1981. p. 186 p. ISBN: 0-7234-0769-X.