Crawford, Matthew B. 31. ožujka 2015. Introduction, Attention as a Cultural Problem. The World Beyond Your Head: On Becoming an Individual in an Age of Distraction (hardcover). 1st izdanje. Farrar, Straus and Giroux. str. 11. ISBN978-0374292980. In the main currents of psychological research, attention is a resource—a person has only so much of it.
Loder, T.; Van Alstyne, M.; Wash, R.; Benerorfe, M. 2004. The spam and attention bond mechanism faq(PDF). Technical Report, University of Michigan. Inačica izvorne stranice(PDF) arhivirana 21. siječnja 2022. Pristupljeno 1. studenoga 2020.
Loder, T.; Van Alstyne, M.; Wash, R.; Benerorfe, M. 2004. The spam and attention bond mechanism faq(PDF). Technical Report, University of Michigan. Inačica izvorne stranice(PDF) arhivirana 21. siječnja 2022. Pristupljeno 1. studenoga 2020.