Gaya APA

Perkin, G, D. (2003). An Illunstrated Pocketbook of Parkinson's Disease and Related Disorders . Boca Raton, Florida: The Parthenon Publishing Group.

Gaya MLA

Perkin, G., David. "An Illunstrated Pocketbook of Parkinson's Disease and Related Disorders". Boca Raton, Florida: The Parthenon Publishing Group, 2003. .