Sadhu, M. (1959). Concentration an outline for practical study. Allen & Unwin.
Chicago Edition CitationSadhu, Mouni. Concentration an Outline for Practical Study. London: Allen & Unwin, 1959.
MLA Edition CitationSadhu, Mouni. Concentration an Outline for Practical Study. Allen & Unwin, 1959.
Warning: These citations may not always be 100% accurate.