Schwank, B. (2014). Petra, Felsobelisken aus Gegend um Theater: = Petra, rock obelisk from area around Theater. Images of the Biblical world online.
Citazione stile Chigago Style (17a edizione)Schwank, Benedikt. "Petra, Felsobelisken Aus Gegend Um Theater: = Petra, Rock Obelisk from Area Around Theater." Images of the Biblical World Online 2014.
Citatione MLA (9a ed.)Schwank, Benedikt. "Petra, Felsobelisken Aus Gegend Um Theater: = Petra, Rock Obelisk from Area Around Theater." Images of the Biblical World Online, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.