Cita APA (7a ed.)

Harrison, P., Harrison, S., & Pearson, M. (1993). Into geography (New national curriculum ed., fully revised 2. ed.). Nelson.

Cita Chicago Style (17a ed.)

Harrison, Patricia, Steve Harrison, y Mike Pearson. Into Geography. New national curriculum ed., fully revised 2. ed. Walton-on-Thames: Nelson, 1993.

Cita MLA (9a ed.)

Harrison, Patricia, et al. Into Geography. New national curriculum ed., fully revised 2. ed. Nelson, 1993.