APA (7th ed.) Citation

Sadhu, M. (1977). Concentration / (by) Mouni Sadhu. Mandala Books.

Chicago Style (17th ed.) Citation

Sadhu, Mouni. Concentration / (by) Mouni Sadhu. London: Mandala Books, 1977.

MLA (9th ed.) Citation

Sadhu, Mouni. Concentration / (by) Mouni Sadhu. Mandala Books, 1977.

Warning: These citations may not always be 100% accurate.