Bossier, F. 1., Verhelst, D. 1., Laga, C. 1., Ijsewijn, J. 1., & Welkenhuysen, A. 1. (1976). Images of man in Ancient and Medieval Thought: Studia Gerardo Verbeke ab amicis et collegis dicata. Leuven: Leuven University Press.

Bossier, Fernand 1933-2006, Daniel 1933- Verhelst, Carl 1924- Laga, Jozef 1932-1998 Ijsewijn, and Andries 1929-2015 Welkenhuysen. Images of Man in Ancient and Medieval Thought: Studia Gerardo Verbeke Ab Amicis Et Collegis Dicata. Leuven: Leuven University Press, 1976.

Bossier, Fernand 1933-2006, et al. Images of Man in Ancient and Medieval Thought: Studia Gerardo Verbeke Ab Amicis Et Collegis Dicata. Leuven: Leuven University Press, 1976.