Kral, T. (1989). Portraits in words. English language programs division bureau of educational and cultural affairs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKral, Thomas. Portraits in Words. Washington, Estados Unidos: English language programs division bureau of educational and cultural affairs, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKral, Thomas. Portraits in Words. English language programs division bureau of educational and cultural affairs, 1989.
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