ebrary, Inc, & Olson, J. S. (1999). Historical dictionary of the 1970s. Greenwood Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus James Stuart Olson. Historical Dictionary of the 1970s. Westport, Conn.: Greenwood Press, 1999.
Lua MLA (9ú heag.)ebrary, Inc, agus James Stuart Olson. Historical Dictionary of the 1970s. Greenwood Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.