United States. Bureau of Mines. (1984). Nonfuel mineral model directory. U.S. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Nonfuel Mineral Model Directory. [Avondale, Md.]: U.S. Dept. of the Interior, Bureau of Mines, 1984.
ציטוט MLAUnited States. Bureau of Mines. Nonfuel Mineral Model Directory. U.S. Dept. of the Interior, Bureau of Mines, 1984.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.