Wheeler, J. H., Kostbade, J. T., & Salter, C. L. (1993). Essentials of world regional geography. Saunders College Pub.
芝加哥风格引文Wheeler, Jesse H., J. Trenton Kostbade, 与 Christopher L. Salter. Essentials of World Regional Geography. Fort Worth: Saunders College Pub, 1993.
MLA引文Wheeler, Jesse H., et al. Essentials of World Regional Geography. Saunders College Pub, 1993.
警告：这些引文格式不一定是100％准确.