APA (7th ed.) Citation

Gräf, G. (1987). English for You: T. 1. English for You.

Chicago Style (17th ed.) Citation

Gräf, Gerhard. "English for You: T. 1." English for You 1987.

MLA (8th ed.) Citation

Gräf, Gerhard. "English for You: T. 1." English for You, 1987.

Warning: These citations may not always be 100% accurate.