Harrington, W. L., & Harrington, C. J. (1904). A first book for non-English-speaking people. D.C. Heath & Co..
Chicago-viite (17. p.)Harrington, Walter Leo, ja Catharine J. Harrington. A First Book for Non-English-speaking People. Boston : New York [etc.]: D.C. Heath & Co., 1904.
MLA-viite (8. p.)Harrington, Walter Leo, ja Catharine J. Harrington. A First Book for Non-English-speaking People. D.C. Heath & Co., 1904.
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