Cita APA (7a ed.)

House, M., House, J., & Curling, L. P. (1981). Looking at geography: Grade three (16. reprint.). College Press.

Cita Chicago Style (17a ed.)

House, Margaret, John House, y Len P. Curling. Looking at Geography: Grade Three. 16. reprint. Salisbury, Zimbabwe: College Press, 1981.

Cita MLA (9a ed.)

House, Margaret, et al. Looking at Geography: Grade Three. 16. reprint. College Press, 1981.