Cita APA (7th ed.)

Newton, H. (1978). Sleepless nights. Schirmer-Mosel.

Cita Chicago (17th ed.)

Newton, Helmut. Sleepless Nights. München: Schirmer-Mosel, 1978.

Cita MLA (8th ed.)

Newton, Helmut. Sleepless Nights. Schirmer-Mosel, 1978.