Fux, J. J., Letzbor, G. [., Letzbor, G., & Letzbor, G. [. K. (2011). Partite a 3. A&R Challenge Records International.

Fux, Johann Joseph, Gunar [Einf.] Letzbor, Gunar Letzbor, and Gunar [Vl]; Korol Letzbor. Partite a 3. A&R Challenge Records International, 2011.

Fux, Johann Joseph, et al. Partite a 3. A&R Challenge Records International, 2011.