APA (7th ed.) Citation

Costa, O. D. (1991). A handbook on effective public speaking. Jaico Publishing House.

Chicago Style (17th ed.) Citation

Costa, Otto De. A Handbook on Effective Public Speaking. Bombay: Jaico Publishing House, 1991.

MLA (9th ed.) Citation

Costa, Otto De. A Handbook on Effective Public Speaking. Jaico Publishing House, 1991.

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