APA-viite (7. p.)
Pye, G. (2004). Vocabulary in practice 1: 30 units of self-study vocabulary exercises; with tests. CUP.
Chicago-viite (17. p.)
Pye, Glennis. Vocabulary in Practice 1: 30 Units of Self-study Vocabulary Exercises; with Tests. Cambridge: CUP, 2004.
MLA-viite (9. p.)
Pye, Glennis. Vocabulary in Practice 1: 30 Units of Self-study Vocabulary Exercises; with Tests. CUP, 2004.
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