(1) See J H Van den Berg, Dr. Gedane Zaken. G F Callenbach. The Netherlands. 1977.

(2) Blanchard, John. Does God Believe in Atheists? Evangelical Press Darlington UK. 2000. p 121

(3) Blanchard, John. Pop Goes the Gospel, p. 84

(4)  Quoted in The Dallas Morning News, Oct. 29, 1978, p. 14A).