APA

Barling J., . (2002). Sling suspension therapy. Victoria: Trafford.

Chicago

Barling John/George, . 2002. Sling suspension therapy. Victoria: Trafford.

Harvard

Barling J., . (2002). Sling suspension therapy. Victoria: Trafford.

MLA

Barling John/George, . Sling suspension therapy. Victoria: Trafford. 2002.