Caine, S. H.; Gordon, E.K. (1968). "TTM: An Experimental Interpretive Language"(PDF). California Institute of Technology, Willis H. Booth Computing Center, Programming Report No. 7. This article incorporates text from this source, which is in the public domain.
Caine, S. H.; Gordon, E. K. (May 1969). "TTM: A Macro Language for Batch Processing"(PDF). California Institute of Technology, Willis H. Booth Computing Center, Programming Report No. 8. This article incorporates text from this source, which is in the public domain.