APA-Zitierstil (7. Ausg.)

Enge, E. (2012). The art of SEO: Mastering search engine optimization (2nd ed.). O'Reilly Media.

Chicago-Zitierstil (17. Ausg.)

Enge, Eric. The Art of SEO: Mastering Search Engine Optimization. 2nd ed. Sebastopol, Calif: O'Reilly Media, 2012.

MLA-Zitierstil (9. Ausg.)

Enge, Eric. The Art of SEO: Mastering Search Engine Optimization. 2nd ed. O'Reilly Media, 2012.