APA (7th ed.) Citation

Castro, R., Jr, & Cecilia, E. O. (1999). 99 common blunders in negotiations (or your money back!). [publisher not identified].

Chicago Style (17th ed.) Citation

Castro, Ricardo, Jr, and Ernesto O. Cecilia. 99 Common Blunders in Negotiations (or Your Money Back!). [Place of publication not identified]: [publisher not identified], 1999.

MLA (9th ed.) Citation

Castro, Ricardo, Jr, and Ernesto O. Cecilia. 99 Common Blunders in Negotiations (or Your Money Back!). [publisher not identified], 1999.