Cita APA (7a ed.)

Birdsall, S. S., & Johnson, B. J. (1983). Skills for understanding North Carolina. Follett.

Cita Chicago Style (17a ed.)

Birdsall, Stephen S., y Betty Jo Johnson. Skills for Understanding North Carolina. Chicago, Ill. [u.a.]: Follett, 1983.

Cita MLA (9a ed.)

Birdsall, Stephen S., y Betty Jo Johnson. Skills for Understanding North Carolina. Follett, 1983.