Johnson, George B.
McGraw-Hill, Higher Education, 2008
Buku Teks
Johnson, George B.
McGraw-Hill, 2003
Buku Teks
Johnson, George B.
McGraw-Hill, 2012
Buku Teks
Johnson, George B.
McGraw-Hill, 2018
Buku Teks
Smith, Ella Thea
New York Hartcourt, Brace And Company, 1951
Buku Teks