American Biographical Institute. (1999). International who's who of twentieth century achievement (1998-1999 ed.). American Biographical Institute.
Chicago Style (17th ed.) CitationAmerican Biographical Institute. International Who's Who of Twentieth Century Achievement. 1998-1999 ed. Raleigh, N.C: American Biographical Institute, 1999.
ציטוט MLAAmerican Biographical Institute. International Who's Who of Twentieth Century Achievement. 1998-1999 ed. American Biographical Institute, 1999.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.