Louis Turner (2010-09-23). “Arnold Toynbee and Japan: From Historian to Guru”. In Hugh Cortazzi (英語). Britain and Japan: Biographical Portraits, Vol. VII. Global Oriental. p. 292. ISBN978-90-04-21803-1. https://books.google.com/books?id=1fV5DwAAQBAJ&pg=PA292. "Toynbee "was paid well for six days of extended interviews [...]. The Toynbee-Ikeda dialogue was the final book in Toynbee's prolific career, which meant that his career ended on a controversial note. In some ways this dialogue played into the hands of Toynbee's critics who disliked his obsession with money. Just as his reputation had suffered in the US from his obsession with accepting lucrative lecturing engagements without much concern about the quality of the institutions he was addressing, so it can be argued that he accepted the dialogue with the controversial Ikeda primarily for the money. [...] The controversial Ikeda/Soka Gakkai attempt to use Toynbee's name and reputation needs to be seen in a wider context."
Paquette, Gabriel B. (June 2000). “The Impact of the 1917 Russian Revolutions on Arnold J. Toynbee's Historical Thought, 1917–34”. Revolutionary Russia13 (1): 55–80. doi:10.1080/09546540008575717.