Singh, L. A. (1970). Yoga psychology: Methods & approaches ([1st ed.). Devendra Singh]; sole distributors: Bharatiya Vidya Prakashan, Varanasi.
Dyfyniad Arddull ChicagoSingh, Lal Amarendra. Yoga Psychology: Methods & Approaches. [1st ed. Unnao, U.P.: Devendra Singh]; sole distributors: Bharatiya Vidya Prakashan, Varanasi, 1970.
Dyfyniad MLASingh, Lal Amarendra. Yoga Psychology: Methods & Approaches. [1st ed. Devendra Singh]; sole distributors: Bharatiya Vidya Prakashan, Varanasi, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.