Cita APA (7a ed.)

Kirkby, R. J. (1999). Exercise in older women: Motives for participation. [s.n.].

Cita Chicago Style (17a ed.)

Kirkby, Robert J. Exercise in Older Women: Motives for Participation. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Kirkby, Robert J. Exercise in Older Women: Motives for Participation. [s.n.], 1999.