Schulz, P., Lütjens, C., Gawronski, M., Andrews, N., Heine, N., & Baldiga, J. (2013). Positive pictures: A gay history / Paul Schulz & Christian Lütjens. [Editor: Mischa Gawronski. Translation from the German: Nicholas Andrews, Nicola Heine. With photos and artwork by Jürgen Baldiga.]. Gmünder.
Παραπομπή σε μορφή Chicago (17η εκδ.)Schulz, Paul, Christian Lütjens, Mischa Gawronski, Nicholas Andrews, Nicola Heine, και Jürgen Baldiga. Positive Pictures: A Gay History / Paul Schulz & Christian Lütjens. [Editor: Mischa Gawronski. Translation from the German: Nicholas Andrews, Nicola Heine. With Photos and Artwork by Jürgen Baldiga.]. Berlin: Gmünder, 2013.
Παραπομπή σε μορφή MLA (8th εκδ.)Schulz, Paul, et al. Positive Pictures: A Gay History / Paul Schulz & Christian Lütjens. [Editor: Mischa Gawronski. Translation from the German: Nicholas Andrews, Nicola Heine. With Photos and Artwork by Jürgen Baldiga.]. Gmünder, 2013.