Cita APA (7a ed.)

Gaebelein, A. C. 1. a. World Prospects. s.n.

Cita Chicago Style (17a ed.)

Gaebelein, Arno Clemens 1861-1945 autor. World Prospects. [S.l: s.n.

Cita MLA (9a ed.)

Gaebelein, Arno Clemens 1861-1945 autor. World Prospects. s.n.