APA

Simkin D., . (1980). The complete pregnancy exercise program. New York: New American Library (NAL).

Chicago

Simkin Diana, . 1980. The complete pregnancy exercise program. New York: New American Library (NAL).

Harvard

Simkin D., . (1980). The complete pregnancy exercise program. New York: New American Library (NAL).

MLA

Simkin Diana, . The complete pregnancy exercise program. New York: New American Library (NAL). 1980.