Schwank, B. (2014). Petra, Abstieg Gräber am Weg: = Petra, descent tombs along the way. Images of the Biblical world online.
Chicago Style (17th ed.) CitationSchwank, Benedikt. "Petra, Abstieg Gräber Am Weg: = Petra, Descent Tombs Along the Way." Images of the Biblical World Online 2014.
MLA (8th ed.) CitationSchwank, Benedikt. "Petra, Abstieg Gräber Am Weg: = Petra, Descent Tombs Along the Way." Images of the Biblical World Online, 2014.
Warning: These citations may not always be 100% accurate.