Wrisley 2019, pp. 71–72. Wrisley, George (2019). "Ad Hominem: Circumstantial". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 77–82. doi:10.1002/9781119165811.ch9. ISBN978-1-119-16580-4. S2CID171674012.
Wrisley 2019, pp. 89–91. Wrisley, George (2019). "Ad Hominem: Circumstantial". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 77–82. doi:10.1002/9781119165811.ch9. ISBN978-1-119-16580-4. S2CID171674012.
Kolb 2019, pp. 351–352. Kolb, Leigh (2019). "Guilt by Association". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 351–353. doi:10.1002/9781119165811.ch83. ISBN978-1-119-16580-4. S2CID187211421.
Wrisley 2019, pp. 86–87. Wrisley, George (2019). "Ad Hominem: Circumstantial". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 77–82. doi:10.1002/9781119165811.ch9. ISBN978-1-119-16580-4. S2CID171674012.
Wrisley 2019, pp. 71–72. Wrisley, George (2019). "Ad Hominem: Circumstantial". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 77–82. doi:10.1002/9781119165811.ch9. ISBN978-1-119-16580-4. S2CID171674012.
Wrisley 2019, pp. 89–91. Wrisley, George (2019). "Ad Hominem: Circumstantial". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 77–82. doi:10.1002/9781119165811.ch9. ISBN978-1-119-16580-4. S2CID171674012.
Kolb 2019, pp. 351–352. Kolb, Leigh (2019). "Guilt by Association". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 351–353. doi:10.1002/9781119165811.ch83. ISBN978-1-119-16580-4. S2CID187211421.
Wrisley 2019, pp. 86–87. Wrisley, George (2019). "Ad Hominem: Circumstantial". In Robert Arp; Steven Barbone; Michael Bruce (eds.). Bad Arguments: 100 of the Most Important Fallacies in Western Philosophy. Wiley Blackwell. pp. 77–82. doi:10.1002/9781119165811.ch9. ISBN978-1-119-16580-4. S2CID171674012.