APA (7th ed.) Citation

Alexander, L. G. (1991). Step by step 1: Graded grammar practice for elementary students. Longman.

Chicago Style (17th ed.) Citation

Alexander, L. G. Step by Step 1: Graded Grammar Practice for Elementary Students. Essex, England: Longman, 1991.

MLA (9th ed.) Citation

Alexander, L. G. Step by Step 1: Graded Grammar Practice for Elementary Students. Longman, 1991.

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