APA (7th ed.) Citation

Stack, L. (2013). Emptying your inbox: The 12 best practices for handling email. Productivity Pro, Inc.

Chicago Style (17th ed.) Citation

Stack, Laura. Emptying Your Inbox: The 12 Best Practices for Handling Email. Highlands Ranch, Colo: Productivity Pro, Inc, 2013.

MLA (9th ed.) Citation

Stack, Laura. Emptying Your Inbox: The 12 Best Practices for Handling Email. Productivity Pro, Inc, 2013.