Cita APA (7a ed.)

Farmer, A., & Blyth, J. (2003). Invaders and settlers: Romans, Anglo, Saxons, Vikings (19. impr.). Ginn.

Cita Chicago Style (17a ed.)

Farmer, Alan, y Joan Blyth. Invaders and Settlers: Romans, Anglo, Saxons, Vikings. 19. impr. Oxford: Ginn, 2003.

Cita MLA (9a ed.)

Farmer, Alan, y Joan Blyth. Invaders and Settlers: Romans, Anglo, Saxons, Vikings. 19. impr. Ginn, 2003.