Cita APA (7a ed.)

Hackstaff, K. B., Kupferberg, F., & Négroni, C. (2012). Biography and turning points in Europe and America. Policy.

Cita Chicago Style (17a ed.)

Hackstaff, Karla B., Feiwel Kupferberg, y Catherine Négroni. Biography and Turning Points in Europe and America. Bristol: Policy, 2012.

Cita MLA (9a ed.)

Hackstaff, Karla B., et al. Biography and Turning Points in Europe and America. Policy, 2012.