Cita APA (7th ed.)

Lehmann, T. (1961). Nobody knows: Negro Spirituals (o.A.). Koehler & Amelang.

Cita Chicago (17th ed.)

Lehmann, Theo. Nobody Knows: Negro Spirituals. o.A. Leipzig: Koehler & Amelang, 1961.

Cita MLA (8th ed.)

Lehmann, Theo. Nobody Knows: Negro Spirituals. o.A. Koehler & Amelang, 1961.