APA (7th ed.) Citation

Elson, W. H., & Runkel, L. E. (1924). Child-Library Readers: Book One. The Elson Extension Series.

Chicago Style (17th ed.) Citation

Elson, William H., and Lura E. Runkel. Child-Library Readers: Book One. The Elson Extension Series. 1924.

MLA (9th ed.) Citation

Elson, William H., and Lura E. Runkel. Child-Library Readers: Book One. The Elson Extension Series. 1924.

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