Wiegner, A., & Nowakowa, I. (2005). Observation, hypothesis, introspection. Rodopi.
Lua i Stíl Chicago (17ú heag.)Wiegner, Adam, agus Izabella Nowakowa. Observation, Hypothesis, Introspection. Amsterdam ; New York: Rodopi, 2005.
Lua MLA (9ú heag.)Wiegner, Adam, agus Izabella Nowakowa. Observation, Hypothesis, Introspection. Rodopi, 2005.
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