APA

Cord W. O., . (19891991). The Teutonic mythology of Richard Wagner's The ring of the Nibelung. Lewiston: Edward Mellen Press.

Chicago

Cord William O, . 19891991. The Teutonic mythology of Richard Wagner's The ring of the Nibelung. Lewiston: Edward Mellen Press.

Harvard

Cord W. O., . (19891991). The Teutonic mythology of Richard Wagner's The ring of the Nibelung. Lewiston: Edward Mellen Press.

MLA

Cord William O, . The Teutonic mythology of Richard Wagner's The ring of the Nibelung. Lewiston: Edward Mellen Press. 19891991.