Παραπομπή APA

Radhakrishnan , S. (1953). Principal upanisads. (23rd ed.).

Παραπομπή Chicago Style

Radhakrishnan , S. Principal Upanisads. 23rd ed. 1953.

Παραπομπή MLA

Radhakrishnan , S. Principal Upanisads. 23rd ed. 1953.