APA-čujuhus (7. p.)

Efron,Alexander. (1957). Sound (NA.). Vakils,Feffer & Simons Private LTD.

Chicago-čujuhus (17. p.)

Efron,Alexander. Sound. NA. Bombay: Vakils,Feffer & Simons Private LTD, 1957.

MLA-čujuhus (9. p.)

Efron,Alexander. Sound. NA. Vakils,Feffer & Simons Private LTD, 1957.

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