United States. Bureau of Reclamation. (1998). Engineering Geology Field Manual. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationUnited States. Bureau of Reclamation. Engineering Geology Field Manual. Washington, D.C: U.S. Government Printing Office, 1998.
ציטוט MLAUnited States. Bureau of Reclamation. Engineering Geology Field Manual. U.S. Government Printing Office, 1998.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.