APA

Gifford L., . (2002). Topical issues in pain 4. Cornwall: CNS press.

Chicago

Gifford Louis, . 2002. Topical issues in pain 4. Cornwall: CNS press.

Harvard

Gifford L., . (2002). Topical issues in pain 4. Cornwall: CNS press.

MLA

Gifford Louis, . Topical issues in pain 4. Cornwall: CNS press. 2002.