Speck, L. (2004). Vest Pocket Slots. Trödler.
Lua i Stíl Chicago (17ú heag.)Speck, Lothar. "Vest Pocket Slots." Trödler 2004.
Lua MLA (8ú heag.)Speck, Lothar. "Vest Pocket Slots." Trödler, 2004.
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