(2006). Library of congress Subject Headings. Washington, D.C: Library of Congress.
Trích dẫn kiểu ChicagoLibrary of Congress Subject Headings. Washington, D.C: Library of Congress, 2006.
ציטוט MLALibrary of Congress Subject Headings. Washington, D.C: Library of Congress, 2006.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.