APA-Zitierstil (7. Ausg.)

Nikūʾī Ṣadrī, B. (2022). The geotourism industry in the 21st century: The origin, principles, and futuristic approach. Apple Academic Press.

Chicago-Zitierstil (17. Ausg.)

Nikūʾī Ṣadrī, Bahrām. The Geotourism Industry in the 21st Century: The Origin, Principles, and Futuristic Approach. Burlington, ON, Canada ; Palm Bay, Florida, USA: Apple Academic Press, 2022.

MLA-Zitierstil (9. Ausg.)

Nikūʾī Ṣadrī, Bahrām. The Geotourism Industry in the 21st Century: The Origin, Principles, and Futuristic Approach. Apple Academic Press, 2022.