APA-referens (7:e uppl.)

Torreces, R. C. Degrees of English language acquisition and its relationship to grammar proficiency of INHS fourth year students.

Chicago-referens (17:e uppl.)

Torreces, Ramir C. Degrees of English Language Acquisition and Its Relationship to Grammar Proficiency of INHS Fourth Year Students. 2008.

MLA-referens (9:e uppl.)

Torreces, Ramir C. Degrees of English Language Acquisition and Its Relationship to Grammar Proficiency of INHS Fourth Year Students.