APA-viite (7. p.)
Zwettler-Otte, S., Bolognini, S., & Gross, R. (2013). The sphinx and the riddles of passion, love and sexuality. PL Academic Researcch.
Chicago-viite (17. p.)
Zwettler-Otte, Sylvia, Stefano Bolognini, ja R. Gross. The Sphinx and the Riddles of Passion, Love and Sexuality. Frankfurt am main, [Germany]: PL Academic Researcch, 2013.
MLA-viite (9. p.)
Zwettler-Otte, Sylvia, et al. The Sphinx and the Riddles of Passion, Love and Sexuality. PL Academic Researcch, 2013.
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