APA (7th ed.) Citation

Hesler, L. R., & Smith, A. H. (1963). North American species of Hygrophorus. University of Tennessee Press.

Chicago Style (17th ed.) Citation

Hesler, L. R., and Alexander Hanchett Smith. North American Species of Hygrophorus. Knoxville: University of Tennessee Press, 1963.

MLA (9th ed.) Citation

Hesler, L. R., and Alexander Hanchett Smith. North American Species of Hygrophorus. University of Tennessee Press, 1963.