Department of Health , 1977
Buku Teks
Holloway, William Vernon, author
McGraw-Hill , 1951
Buku Teks
Freedman, Amy L., author
Routledge, 2000
Buku Teks
Rose, Peter I., foreword
Random House, 1964
Buku Teks
Freedman, Amy L., author
Routledge, 2000
Buku Teks