Cita APA (7a ed.)

Foster, S., & Foster, J. (2001). Global concerns (1. publ., reprinted.). Collins.

Cita Chicago Style (17a ed.)

Foster, Simon, y John Foster. Global Concerns. 1. publ., reprinted. London: Collins, 2001.

Cita MLA (9a ed.)

Foster, Simon, y John Foster. Global Concerns. 1. publ., reprinted. Collins, 2001.