APA ציטוט

Ahlqvist, O., & Schlieder, C. (2020). Geogames and Geoplay. 1st ed. 2018. Springer International Publishing.

Trích dẫn kiểu Chicago

Ahlqvist, Ola, và Christoph Schlieder. Geogames and Geoplay. 1st Ed. 2018. Springer International Publishing, 2020.

ציטוט MLA

Ahlqvist, Ola, và Christoph Schlieder. Geogames and Geoplay. 1st Ed. 2018. Springer International Publishing, 2020.