9 (HEYMANN 1998, p. 315)
10 (LAWFORD, PETER. INTERVIEW WITH C. DAVID HEYMANN. 1983)
11 (HEYMANN 1998, p. 322)
12 (HEYMANN 1998, p. 540)
13 (JACOBS 2004, pp. 169, 172–173)
14 (NEWCOMB, PATRICIA. INTERVIEW WITH DONALD SPOTO. 3 AUGUST 1992)
15 (GATES 1993, p. 165)
16 (SELSMAN, MICHAEL. INTERVIEW WITH JAY MARGOLIS. 1 JANUARY 2012)
17 (SELSMAN, MICHAEL. INTERVIEW WITH JAY MARGOLIS. 1 JANUARY 2012)
18 (SELSMAN, MICHAEL. INTERVIEW WITH JAY MARGOLIS. 28 MARCH 2011)
19 (MARTIN, JEANNE. INTERVIEW WITH JAY MARGOLIS. 11 NOVEMBER 2010)
20 (LAWFORD, PETER. INTERVIEW WITH C. DAVID HEYMANN. 1983)
21 (SUMMERS 2000, p. 317)
22 (OTASH, FRED. INTERVIEW WITH JAMES SPADA. 15 NOVEMBER 1988)
23 (STRAIT 1992, p. 155)
24 (STRAIT, RAYMOND. INTERVIEW WITH JAY MARGOLIS. 28 JULY 2013)
25 (NAAR, JOSEPH. INTERVIEW WITH JAY MARGOLIS. 2 SEPTEMBER 2010)
26 (BADMAN 2010, p. 296)
27 (From the collection of YouTube member SGTG77)
28 (From the collection of YouTube member SGTG77)