(1969). Solar-Geophysical data. U.S. Department of Commerce.
Chicago Style (17th ed.) CitationSolar-Geophysical Data. Washington, D.C: U.S. Department of Commerce, 1969.
ציטוט MLASolar-Geophysical Data. U.S. Department of Commerce, 1969.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.