Cita APA (7a ed.)

Kelsey, T. a. (2017). Introduction to search engine optimization: A guide for absolute beginners. Apress.

Cita Chicago Style (17a ed.)

Kelsey, Todd. author. Introduction to Search Engine Optimization: A Guide for Absolute Beginners. Berkeley, CA: Apress, 2017.

Cita MLA (9a ed.)

Kelsey, Todd. author. Introduction to Search Engine Optimization: A Guide for Absolute Beginners. Apress, 2017.