Larsen 1979, p. 344. Larsen, John C. (1979). "Information Sources Currently Studied in General Reference Courses". RQ. 18 (4): 341–348. ISSN0033-7072. JSTOR25826228.
Hallenberg 1999, p. 427. Hallenberg, Albert (1999). "Review of The Scribner Encyclopedia of American Lives, vol. 1: 1981—85". Reference & User Services Quarterly. 38 (4): 425–427. ISSN1094-9054. JSTOR20863659.
Larsen 1979, p. 344. Larsen, John C. (1979). "Information Sources Currently Studied in General Reference Courses". RQ. 18 (4): 341–348. ISSN0033-7072. JSTOR25826228.
Hallenberg 1999, p. 427. Hallenberg, Albert (1999). "Review of The Scribner Encyclopedia of American Lives, vol. 1: 1981—85". Reference & User Services Quarterly. 38 (4): 425–427. ISSN1094-9054. JSTOR20863659.