APA (7e ed.) Bronvermelding

Klaudia, D., & Adam, P. (2021). The underground city: The tourism potential of water and sewage infrastructure: the example of Poland. Nicolaus Copernicus University in Toruń.

Chicago (17e ed.) Bronvermelding

Klaudia, Dębczyńska, en Piasecki Adam. The Underground City: The Tourism Potential of Water and Sewage Infrastructure: The Example of Poland. Nicolaus Copernicus University in Toruń, 2021.

MLA (9e ed.) Bronvermelding

Klaudia, Dębczyńska, en Piasecki Adam. The Underground City: The Tourism Potential of Water and Sewage Infrastructure: The Example of Poland. Nicolaus Copernicus University in Toruń, 2021.