Protter, E., & Protter, N. (1966). Celtic folk and fairy tales. Duell.
Lua i Stíl Chicago (17ú heag.)Protter, Eric, agus Nancy Protter. Celtic Folk and Fairy Tales. New York: Duell, 1966.
Lua MLA (9ú heag.)Protter, Eric, agus Nancy Protter. Celtic Folk and Fairy Tales. Duell, 1966.
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