Gruber, D., & Dunn, V. Writing. Elementary.
Cita Chicago (17th ed.)Gruber, Diann, i Viviane Dunn. Writing. Elementary.
Cita MLA (8th ed.)Gruber, Diann, i Viviane Dunn. Writing. Elementary.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)