Thomas, M. H., Murphy, S. E., & Knuths, T. M. (1970). Books related to adult basic education and teaching English to speakers of other languages: A bibliography from the Educational Materials Center. [Washington]: National Center for Educational Communication; [for sale by the Supt. of Docs., U.S. Govt. Print. Off..

Thomas, Myra H., Sidney E. Murphy, and Thelma M. Knuths. Books Related to Adult Basic Education and Teaching English to Speakers of Other Languages: A Bibliography From the Educational Materials Center. [Washington]: National Center for Educational Communication; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1970.

Thomas, Myra H., Sidney E. Murphy, and Thelma M. Knuths. Books Related to Adult Basic Education and Teaching English to Speakers of Other Languages: A Bibliography From the Educational Materials Center. [Washington]: National Center for Educational Communication; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1970.