Tutors' resource handbook : assessment items and sample lessons
MLA
Helfrich, John E, et al. Tutors' Resource Handbook: Assessment Items and Sample Lessons. [Washington, D.C.]: U.S. Dept. of Health, Education, and Welfare, Office of Education , 1974
APA, 7th edition
Helfrich, J. E, LeTendre, M. Jean, Fay, L., Laffey, J. L., & Smith, C. Bernard. (1974). Tutors' resource handbook: assessment items and sample lessons. [Washington, D.C.]: U.S. Dept. of Health, Education, and Welfare, Office of Education
Chicago, 17th edition
Helfrich, John E., Mary Jean LeTendre, Leo Fay, James L. Laffey, and Carl Bernard Smith. Tutors' resource handbook: assessment items and sample lessons. [Washington, D.C.]: U.S. Dept. of Health, Education, and Welfare, Office of Education , 1974