APA (7th ed.) Citation

Pile, L., & Williams, A. (2002). Pass cambridge BEC Preliminary [CD-ROM]: Self-study practice tests with key. Summertown Publishing.

Chicago Style (17th ed.) Citation

Pile, Louise, and Anne Williams. Pass Cambridge BEC Preliminary [CD-ROM]: Self-study Practice Tests with Key. Summertown: Summertown Publishing, 2002.

MLA (9th ed.) Citation

Pile, Louise, and Anne Williams. Pass Cambridge BEC Preliminary [CD-ROM]: Self-study Practice Tests with Key. Summertown Publishing, 2002.