Martinson, R. A., Dawley, M., & Syphers, D. (1968). Curriculum enrichment for the gifted in the primary grades. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Martinson, Ruth A., Muriel Dawley, agus Dorothy Syphers. Curriculum Enrichment for the Gifted in the Primary Grades. Englewood Cliffs, N.J: Prentice-Hall, 1968.
Lua MLA (9ú heag.)Martinson, Ruth A., et al. Curriculum Enrichment for the Gifted in the Primary Grades. Prentice-Hall, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.