edited by Helen Yura
Appleton-century-crofts, 1978
Buku Teks
edited by Helen Yura, Mary B. Walsh
Appleton Century, 1983
Buku Teks
edited by Helen Yura, Marylin B. Walsh
Appletton-Lange , 1982
Buku Teks
Bailliere tindall , 1982
Buku Teks
Monica, Elaine L.
Addison-Wesley, 1979
Buku Teks