Khandwalla, P. N. (1988). Fourth eye: Excellence through creativity (2nd ed.). Wheeler.
Παραπομπή Chicago StyleKhandwalla, Pradip N. Fourth Eye: Excellence Through Creativity. 2nd ed. Allahabad: Wheeler, 1988.
Παραπομπή MLAKhandwalla, Pradip N. Fourth Eye: Excellence Through Creativity. 2nd ed. Wheeler, 1988.
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