APA (7th ed.) Citation

Gruber, D., & Dunn, V. Writing. Elementary.

Chicago Style (17th ed.) Citation

Gruber, Diann, and Viviane Dunn. Writing. Elementary.

MLA (8th ed.) Citation

Gruber, Diann, and Viviane Dunn. Writing. Elementary.

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