Cita APA

Cross, W., & Florio, C. (1978). You are never too old to learn. New York: McGraw-Hill.

Citación estilo Chicago

Cross, Wilbur., and Carol Florio. You Are Never Too Old to Learn. New York: McGraw-Hill, 1978.

Cita MLA

Cross, Wilbur., and Carol Florio. You Are Never Too Old to Learn. New York: McGraw-Hill, 1978.

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