APA (7th ed.) Citation

DUNCKEL & Parnham. (1988). Guide to effective-business speaking. International Self-Counsel Press.

Chicago Style (17th ed.) Citation

DUNCKEL and Parnham. Guide to Effective-business Speaking. Canada: International Self-Counsel Press, 1988.

MLA (9th ed.) Citation

DUNCKEL and Parnham. Guide to Effective-business Speaking. International Self-Counsel Press, 1988.

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