APA-referens (7:e uppl.)

MARTIN. (2006). MEANING OF THE 21ST CENTURY. PWENGUINE BOOK.

Chicago-referens (17:e uppl.)

MARTIN. MEANING OF THE 21ST CENTURY. NY: PWENGUINE BOOK, 2006.

MLA-referens (9:e uppl.)

MARTIN. MEANING OF THE 21ST CENTURY. PWENGUINE BOOK, 2006.