APA ציטוט
Gustavson, C. G. (1955). A preface to history. McGraw-Hill.
Chicago Style (17th ed.) Citation
Gustavson, Carl Gustav. A Preface to History. New York: McGraw-Hill, 1955.
ציטוט MLA
Gustavson, Carl Gustav. A Preface to History. McGraw-Hill, 1955.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.