The following links contain the slides where the information has been organized. Each presentation contains the corresponding references where the information and pictures were taken from.
Chapter 1 «Introducing Second Language Acquisition» (Saville-Troike, 2006)
https://prezi.com/crowntushske/chapter-1-introducing-second-language-acquisition/
Chapter 2 «Foundations of Second Language Acquisition»(Saville-Troike, 2006)
https://prezi.com/c5rzvqts5iya/chapter-2-foundations-of-second-language-acquisition/
Chapter 3 (Saville-Troike, 2006) and Chapter 4 (Gass & Selinker, 2008)
https://prezi.com/uazekzkfesh-/chapter-3-saville-troike-2006-and-chapter-4-gass-selinker-2008/
Chapter 4 (Saville-Troike, 2006) and Chapter 8 and 12 (Gass & Selinker, 2008)
Reflective journal "Theories of Second Language Acquisition" 