Cita APA (7a ed.)

Heinrich, G. (1967). Hugo Rachel, Johannes Papritz, Paul Wallich (Bd. 2-3: Hugo Rachel, Paul Wallich). de Gruyter.

Cita Chicago Style (17a ed.)

Heinrich, Gerd. Hugo Rachel, Johannes Papritz, Paul Wallich (Bd. 2-3: Hugo Rachel, Paul Wallich). Berlin: de Gruyter, 1967.

Cita MLA (8a ed.)

Heinrich, Gerd. Hugo Rachel, Johannes Papritz, Paul Wallich (Bd. 2-3: Hugo Rachel, Paul Wallich). de Gruyter, 1967.