APA-čujuhus (7. p.)

Hirschberg, D. (1949). Duets are fun. Musicord Publications.

Chicago-čujuhus (17. p.)

Hirschberg, David.,comp. Duets Are Fun. New York: Musicord Publications, 1949.

MLA-čujuhus (9. p.)

Hirschberg, David.,comp. Duets Are Fun. Musicord Publications, 1949.

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