APA (7th ed.) Citation

Van Syoc, W. B., & Van Syoc, F. S. Let's learn english. Advanced course.

Chicago Style (17th ed.) Citation

Van Syoc, W. Bryce, and Florence S. Van Syoc. Let's Learn English. Advanced Course.

MLA (8th ed.) Citation

Van Syoc, W. Bryce, and Florence S. Van Syoc. Let's Learn English. Advanced Course.

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