Gaya APA

Swanson, C, P., John, I, U. (NULL). Physical disabilities and health impairments an introduction . Ohio:: Ohio: Charles E. Merril; 1983.

Gaya MLA

Swanson, Carl, P.., John, I., Umbreit,. "Physical disabilities and health impairments an introduction". Ohio:: Ohio: Charles E. Merril; 1983, NULL. Text.