APA (7th ed.) Citation

Feldt, R. (2002). Ruby developer's guide. Syngress Pub.

Chicago Style (17th ed.) Citation

Feldt, Robert. Ruby Developer's Guide. Rockland, MA: Syngress Pub, 2002.

MLA (9th ed.) Citation

Feldt, Robert. Ruby Developer's Guide. Syngress Pub, 2002.

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