APA

Treays R., Fox C., . (1997). Understanding Your Muscles & Bones. London: Usborne Publishing.

Chicago

Treays Rebecca, Fox Christyan, . 1997. Understanding Your Muscles & Bones. London: Usborne Publishing.

Harvard

Treays R., Fox C., . (1997). Understanding Your Muscles & Bones. London: Usborne Publishing.

MLA

Treays Rebecca, Fox Christyan, . Understanding Your Muscles & Bones. London: Usborne Publishing. 1997.