APA (7th ed.) Citation

Duffy, F. R. (197). Exploring the Child's World. Philadelphia.

Chicago Style (17th ed.) Citation

Duffy, Francis R. Exploring the Child's World. Philadelphia, 197.

MLA (8th ed.) Citation

Duffy, Francis R. Exploring the Child's World. Philadelphia, 197.

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