APA

Betz E. W., Library of Congress, . (1982). Graphic materials: rules for describing original items and historical collections. Washington, D.C: .

Chicago

Betz Elizabeth W, Library of Congress, . 1982. Graphic materials: rules for describing original items and historical collections. Washington, D.C: .

Harvard

Betz E. W., Library of Congress, . (1982). Graphic materials: rules for describing original items and historical collections. Washington, D.C: .

MLA

Betz Elizabeth W, Library of Congress, . Graphic materials: rules for describing original items and historical collections. Washington, D.C: . 1982.