APA-referens (7:e uppl.)

Tingley, K. A. W. The New century. New Century Corp.

Chicago-referens (17:e uppl.)

Tingley, Katherine Augusta Westcott. The New Century. New York: New Century Corp.

MLA-referens (8:e uppl.)

Tingley, Katherine Augusta Westcott. The New Century. New Century Corp.