Gaya APA

Associaton, A, P, T. (1999). E-Book What You Need to Know About Balance and Falls: a physical therapist's perspective . Alexandria: APTA.

Gaya MLA

Associaton, Amarican, Physical, Therapy. "E-Book What You Need to Know About Balance and Falls: a physical therapist's perspective". Alexandria: APTA, 1999. Text.