Copland, A. (1989). Four early songs: For voice and piano / Aaron Copland. Boosey & Hawkes.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCopland, Aaron. Four Early Songs: For Voice and Piano / Aaron Copland. Bonn: Boosey & Hawkes, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCopland, Aaron. Four Early Songs: For Voice and Piano / Aaron Copland. Boosey & Hawkes, 1989.
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