APA (7th ed.) Citation

VerderberlhRudolph F. The challenge of effective speaking.

Chicago Style (17th ed.) Citation

VerderberlhRudolph F. The Challenge of Effective Speaking. United StateslbWadsworth Thomson Learninglc2000.

MLA (9th ed.) Citation

VerderberlhRudolph F. The Challenge of Effective Speaking.

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