APA-referens (7:e uppl.)

Houghton, F. (1911). First lessons in English for foreigners in evening schools. American Book Co.

Chicago-referens (17:e uppl.)

Houghton, Frederick. First Lessons in English for Foreigners in Evening Schools. New York, Cincinati [etc.]: American Book Co, 1911.

MLA-referens (8:e uppl.)

Houghton, Frederick. First Lessons in English for Foreigners in Evening Schools. American Book Co, 1911.