Style de citation APA (7e éd.)

(1979). Publishers' International Directory with ISBN Index. K.G.Saur.

Style de citation Chicago (17e éd.)

Publishers' International Directory with ISBN Index. München ; New York: K.G.Saur, 1979.

Style de citation MLA (9e éd.)

Publishers' International Directory with ISBN Index. K.G.Saur, 1979.