APA (7th ed.) Citation

Duffy, C., & Mahnke, M. (1995). The heinemann toefl practice tests (2a ed.). Toefl (Test Of English Foreign Language).

Chicago Style (17th ed.) Citation

Duffy, C.B, and M.K Mahnke. The Heinemann Toefl Practice Tests. 2a ed. Oxford: Toefl (Test Of English Foreign Language), 1995.

MLA (9th ed.) Citation

Duffy, C.B, and M.K Mahnke. The Heinemann Toefl Practice Tests. 2a ed. Toefl (Test Of English Foreign Language), 1995.