Author: Clapin, A. C.
Publisher:Hachette, London
Copyright: N/A
Author: Mazzariol, Giuseppe
Publisher:Lombroso, Venezia
Copyright:1959
Author: Daicoviciu, C
Publisher:Editura Academiei Republic, Romine
Copyright:1954
Author: Pereira, Francisco
Publisher:
Copyright: N/A
Author: Roero, Osvaldo
Publisher:Camilla E. Bertolero, Torino
Copyright: N/A
Author:
Publisher:E. J. Brill Ltd., Leiden
Copyright:1959
Author: Swami, Geethananda
Publisher:Sivagiri Mutt, Varkala
Copyright:1954
Author: Swami, Dharmatheerthar ധര്മ്മതീര്ത്ഥര് സ്വാമി
Publisher:Swami Krishnanada, Peingottukara
Copyright:1947
Author: Nair, M. Gopalkrishnan
Publisher:Sahitya Akademi, New Delhi
Copyright:2003