APA (7th ed.) Citation

SHELLER, W. D. Welcome to english text book. English Language Service Inc.

Chicago Style (17th ed.) Citation

SHELLER, WILLIARD D. Welcome to English Text Book. English Language Service Inc.

MLA (8th ed.) Citation

SHELLER, WILLIARD D. Welcome to English Text Book. English Language Service Inc.

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