American Foundation for Continuing Education. (1963). Exploring the universe. McGraw-Hill Book Co., Inc.
Chicago Style (17th ed.) CitationAmerican Foundation for Continuing Education. Exploring the Universe. New York: McGraw-Hill Book Co., Inc, 1963.
ציטוט MLAAmerican Foundation for Continuing Education. Exploring the Universe. McGraw-Hill Book Co., Inc, 1963.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.