... la houille...

MLA

Kickx, Jean, and Jozef Baumann. ... La Houille.. Gent, 1894.

APA

Kickx, J., & Baumann, J. (1894). ... la houille.. Gent.

Chicago

Kickx, Jean, and Jozef Baumann. ... La Houille... Gent, 1894.