APA (7th ed.) Citation

Miller, Z. (2018). SEO keyword research made easy and free research software. PACKT Publishing.

Chicago Style (17th ed.) Citation

Miller, Zach. SEO Keyword Research Made Easy and Free Research Software. Birmingham, England: PACKT Publishing, 2018.

MLA (9th ed.) Citation

Miller, Zach. SEO Keyword Research Made Easy and Free Research Software. PACKT Publishing, 2018.

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