Cita APA (7a ed.)

Redshaw, M., & Heikkilä, K. (2011). Ethnic differences in women's worries about labour and birth.

Cita Chicago Style (17a ed.)

Redshaw, M., y K. Heikkilä. Ethnic Differences in Women's Worries About Labour and Birth. 2011.

Cita MLA (9a ed.)

Redshaw, M., y K. Heikkilä. Ethnic Differences in Women's Worries About Labour and Birth. 2011.