APA (7th ed.) Citation

Gregory, D., & Walford, R. (1989). Horizons in human geography. Barnes & Noble Books.

Chicago Style (17th ed.) Citation

Gregory, Derek, and Rex Walford. Horizons in Human Geography. Totowa, N.J: Barnes & Noble Books, 1989.

MLA (9th ed.) Citation

Gregory, Derek, and Rex Walford. Horizons in Human Geography. Barnes & Noble Books, 1989.