Παραπομπή APA

Pye, G. (2005). Vocabulary in practice: 40 units of self-study vocabulary exercises. Cambridge Universit press.

Παραπομπή Chicago Style

Pye, Glennis. Vocabulary in Practice: 40 Units of Self-study Vocabulary Exercises. New delhi: Cambridge Universit press, 2005.

Παραπομπή MLA

Pye, Glennis. Vocabulary in Practice: 40 Units of Self-study Vocabulary Exercises. Cambridge Universit press, 2005.