APA

Switzer Kathrine, . (1998). Running and walking for women over 40. New York: St. Martin’s Griffin.

Chicago

Switzer Kathrine, . 1998. Running and walking for women over 40. New York: St. Martin’s Griffin.

Harvard

Switzer Kathrine, . (1998). Running and walking for women over 40. New York: St. Martin’s Griffin.

MLA

Switzer Kathrine, . Running and walking for women over 40. New York: St. Martin’s Griffin. 1998.