Citazione Stile APA (7a Edizione)

Yearwood, D. B., & Yearwood, E. I. (1979). Selectability of Print Materials in Support of the Grades 10 and 11 Social Studies Curriculum.

Citazione stile Chigago Style (17a edizione)

Yearwood, D. B., e E. I. Yearwood. Selectability of Print Materials in Support of the Grades 10 and 11 Social Studies Curriculum. 1979.

Citatione MLA (9a ed.)

Yearwood, D. B., e E. I. Yearwood. Selectability of Print Materials in Support of the Grades 10 and 11 Social Studies Curriculum. 1979.