APA (7th ed.) Citation

Mack, D., & Voss, E. (1978). Richard Wagner =: Life and work in dates and pictures (Rev. ed.). Insel.

Chicago Style (17th ed.) Citation

Mack, Dietrich, and Egon Voss. Richard Wagner =: Life and Work in Dates and Pictures. Rev. ed. Frankfurt: Insel, 1978.

MLA (9th ed.) Citation

Mack, Dietrich, and Egon Voss. Richard Wagner =: Life and Work in Dates and Pictures. Rev. ed. Insel, 1978.