Gaya APA

Blij, H, J, D., Muller, P, O. (1994). Geography Realms, Regions, and Concepts (Edisi VII). Canada: John Wiley and Sons.

Gaya MLA

Blij, H, J, De., Muller, Peter, O. "Geography Realms, Regions, and Concepts". Edisi VII Canada: John Wiley and Sons, 1994. Text.