Cita APA (7a ed.)

Carmichael, F., & Charles, S. (2003). The opportunity costs of informal care: Does gender matter? [s.n.].

Cita Chicago Style (17a ed.)

Carmichael, Fiona, y Susan Charles. The Opportunity Costs of Informal Care: Does Gender Matter? [S.l.]: [s.n.], 2003.

Cita MLA (9a ed.)

Carmichael, Fiona, y Susan Charles. The Opportunity Costs of Informal Care: Does Gender Matter? [s.n.], 2003.