Foster, Leslie D., ‘"Walden" and Its Audiences: Troubled Sleep, and Religious and Other Awakenings’, in Modern Language Review, 67.4 (1972), pp. 756–62, doi:10.2307/3724494

Foster, Leslie D., review of Henry D. Thoreau, Joseph J. Moldenhauer, The Maine Woods, in Modern Language Review, 70.2 (1975), p. 408, doi:10.2307/3724307