APA (7th ed.) Citation

Wolff, J. (2012). Focus, 2nd Edition (2nd edition.). Pearson Business.

Chicago Style (17th ed.) Citation

Wolff, Jürgen. Focus, 2nd Edition. 2nd edition. Pearson Business, 2012.

MLA (9th ed.) Citation

Wolff, Jürgen. Focus, 2nd Edition. 2nd edition. Pearson Business, 2012.

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