APA (7th ed.) Citation

Bloomberg News (Firm), Chang, E., & Wieser, B. (2013). Grading Marissa Mayer's performance at Yahoo. Bloomberg.

Chicago Style (17th ed.) Citation

Bloomberg News (Firm), Emily Chang, and Brian Wieser. Grading Marissa Mayer's Performance at Yahoo. New York: Bloomberg, 2013.

MLA (9th ed.) Citation

Bloomberg News (Firm), et al. Grading Marissa Mayer's Performance at Yahoo. Bloomberg, 2013.