APA (7th ed.) Citation

(1983). Philips language learning system: English IV [kaset]. Zurich : Philips AG.

Chicago Style (17th ed.) Citation

Philips Language Learning System: English IV [kaset]. Zurich : Philips AG, 1983.

MLA (9th ed.) Citation

Philips Language Learning System: English IV [kaset]. Zurich : Philips AG, 1983.

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