APA-referens (7:e uppl.)

PERKINS WENDY. (2019). LET'S LOOK AT ANIMAL LEGS (2007 Ed.). CAPSTONE GLOBAL PUBLISHERS.

Chicago-referens (17:e uppl.)

PERKINS WENDY. LET'S LOOK AT ANIMAL LEGS. 2007 Ed. LONDON: CAPSTONE GLOBAL PUBLISHERS, 2019.

MLA-referens (9:e uppl.)

PERKINS WENDY. LET'S LOOK AT ANIMAL LEGS. 2007 Ed. CAPSTONE GLOBAL PUBLISHERS, 2019.