Cita APA (7a ed.)

Dobson, F. R., & Virgo, H. E. (1986). North West Europe (7. impression.). Hodder and Stoughton.

Cita Chicago Style (17a ed.)

Dobson, F. R., y H. E. Virgo. North West Europe. 7. impression. London [u.a.]: Hodder and Stoughton, 1986.

Cita MLA (9a ed.)

Dobson, F. R., y H. E. Virgo. North West Europe. 7. impression. Hodder and Stoughton, 1986.