Shaffer, P. (1958). Five finger exercise: A play. Samuel French.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShaffer, Peter. Five Finger Exercise: A Play. London: Samuel French, 1958.
एमएलए (9वां संस्करण) प्रशस्ति पत्रShaffer, Peter. Five Finger Exercise: A Play. Samuel French, 1958.
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