APA ציטוט
Armstrong, W. H. (1967). Study is hard work (2nd ed.). Harper $ row.
Chicago Style (17th ed.) Citation
Armstrong, William H. Study Is Hard Work. 2nd ed. New York: Harper $ row, 1967.
ציטוט MLA
Armstrong, William H. Study Is Hard Work. 2nd ed. Harper $ row, 1967.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.