Lua APA (7ú heag.)

Purdy, R. C. (1907). Studies in glazes. University of Illinois.

Lua i Stíl Chicago (17ú heag.)

Purdy, R. C. Studies in Glazes. [Urbana: University of Illinois, 1907.

Lua MLA (8ú heag.)

Purdy, R. C. Studies in Glazes. University of Illinois, 1907.

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