Cita APA (7a ed.)

Crowhurst, M. (1993). Writing in the middle years. Pippin.

Cita Chicago Style (17a ed.)

Crowhurst, Marion. Writing in the Middle Years. Markham, Ontario: Pippin, 1993.

Cita MLA (9a ed.)

Crowhurst, Marion. Writing in the Middle Years. Pippin, 1993.