APA-referens (7:e uppl.)
Pye, G. (2004). Vocabulary in practice 1: 30 units of self-study vocabulary exercises; with tests. CUP.
Chicago-referens (17:e uppl.)
Pye, Glennis. Vocabulary in Practice 1: 30 Units of Self-study Vocabulary Exercises; with Tests. Cambridge: CUP, 2004.
MLA-referens (9:e uppl.)
Pye, Glennis. Vocabulary in Practice 1: 30 Units of Self-study Vocabulary Exercises; with Tests. CUP, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.