Strang, R., McCullough, C. M., & Traxler, A. E. (1961). The improvement of reading (3. ed. of Problems in the improvement of reading.). McGraw-Hill.

Strang, Ruth, Constance M. McCullough, and Arthur E. Traxler. The Improvement of Reading. 3. ed. of Problems in the improvement of reading. New York [u.a.]: McGraw-Hill, 1961.

Strang, Ruth, et al. The Improvement of Reading. 3. ed. of Problems in the improvement of reading. McGraw-Hill, 1961.