Kamber, Victor (2003). Poison Politics: Are Negative Campaigns Destroying Democracy?; Basic Books, New York City; (ردمك 978-0-7382-0872-5). See p.270: "As Hubert Humphrey III, son of HHH and now Minnesota's attorney general, said." [وصلة مكسورة]نسخة محفوظة 2020-05-10 في Wayback Machine
Kamber, Victor (2003). Poison Politics: Are Negative Campaigns Destroying Democracy?; Basic Books, New York City; (ردمك 978-0-7382-0872-5). See p.270: "As Hubert Humphrey III, son of HHH and now Minnesota's attorney general, said." [وصلة مكسورة]نسخة محفوظة 2020-05-10 في Wayback Machine
