Παραπομπή σε μορφή APA (7η εκδ.)

Waltham, T., Bell, F. G., & Culshaw, M. G. (2005). Sinkholes and Subsidence: Karst and Cavernous Rocks in Engineering and Construction. Praxis Publishing Ltd.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Waltham, Tony, Fred G. Bell, και Martin G. Culshaw. Sinkholes and Subsidence: Karst and Cavernous Rocks in Engineering and Construction. Berlin, Heidelberg: Praxis Publishing Ltd, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Waltham, Tony, et al. Sinkholes and Subsidence: Karst and Cavernous Rocks in Engineering and Construction. Praxis Publishing Ltd, 2005.