Comite International Pour l'Etude des Argiles(CIPEA), International Union of Geological Sciences(IUGS), Rosenqvist, T., & Graff-Petersen, P. (1964). Proceedings of the conference held at Stockholm, Sweden, august 12-16. Pergamon Press.

Comite International Pour l'Etude des Argiles(CIPEA), International Union of Geological Sciences(IUGS), Th.I Rosenqvist, and P. Graff-Petersen. Proceedings of the Conference Held at Stockholm, Sweden, August 12-16. Oxford: Pergamon Press, 1964.

Comite International Pour l'Etude des Argiles(CIPEA), et al. Proceedings of the Conference Held at Stockholm, Sweden, August 12-16. Pergamon Press, 1964.