APA (7th ed.) Citation

De Blij, H. J. (1967). Systematic political geography. John Wiley r Sons.

Chicago Style (17th ed.) Citation

De Blij, Harm J. Systematic Political Geography. John Wiley r Sons, 1967.

MLA (8th ed.) Citation

De Blij, Harm J. Systematic Political Geography. John Wiley r Sons, 1967.

Warning: These citations may not always be 100% accurate.