Koller E. L. (2016). Light, Shade and Shadow. Dover Pub. Inc.
Lua i Stíl Chicago (17ú heag.)Koller E. L. Light, Shade and Shadow. New York: Dover Pub. Inc, 2016.
Lua MLA (9ú heag.)Koller E. L. Light, Shade and Shadow. Dover Pub. Inc, 2016.
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