Cita APA (7a ed.)

Barnard, W. S. (1973). Our new world (Senior second. course, 1. publ., 2. impr.). Maskew Miller.

Cita Chicago Style (17a ed.)

Barnard, W. S. Our New World. Senior second. course, 1. publ., 2. impr. Cape Town: Maskew Miller, 1973.

Cita MLA (9a ed.)

Barnard, W. S. Our New World. Senior second. course, 1. publ., 2. impr. Maskew Miller, 1973.