APA (7th ed.) Citation

Toller, E. (1937). Look through the bars: Letters from prison, poems and a new version of the swallow book. Farrar & Rinehart.

Chicago Style (17th ed.) Citation

Toller, Ernst. Look Through the Bars: Letters from Prison, Poems and a New Version of the Swallow Book. New York: Farrar & Rinehart, 1937.

MLA (8th ed.) Citation

Toller, Ernst. Look Through the Bars: Letters from Prison, Poems and a New Version of the Swallow Book. Farrar & Rinehart, 1937.