(1989). Values. Houghton Mifflin.
Chicago Style (17th ed.) CitationValues. Boston: Houghton Mifflin, 1989.
MLA (9th ed.) CitationValues. Houghton Mifflin, 1989.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(1989). Values. Houghton Mifflin.
Chicago Style (17th ed.) CitationValues. Boston: Houghton Mifflin, 1989.
MLA (9th ed.) CitationValues. Houghton Mifflin, 1989.