Hofmeyr, J. H., & Hoernlé, R. F. A. (1945). Christian principles and race problem. South African Institute of Race Relations.

Hofmeyr, Jan H., and Reinhold Frederick Alfred Hoernlé. Christian Principles and Race Problem. Johannesburg: South African Institute of Race Relations, 1945.

Hofmeyr, Jan H., and Reinhold Frederick Alfred Hoernlé. Christian Principles and Race Problem. South African Institute of Race Relations, 1945.