Kindred, L. W. (1981). The Middle school curriculum: A practitioner's handbook. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Kindred, Leslie W. The Middle School Curriculum: A Practitioner's Handbook. Boston: Allyn and Bacon, 1981.
Lua MLA (9ú heag.)Kindred, Leslie W. The Middle School Curriculum: A Practitioner's Handbook. Allyn and Bacon, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.