Macmillan encyclopedia of computers
Gary G. Bitter, editor in chief
Macmillan, 1992
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Macmillan encyclopedia of the environment
General editor, Stephen R. Kellert; Associate editors, Matthew Black, Richard Haley
London : Simon & Schuster, 1997,
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Macmillan encyclopedia of the environment
General editor Stephen R. Kellert; Associate editors Matthew Black, Richard Haley
London : Simon & Schuster, 1997,
 Buku Referensi
Macmillan encyclopedia of the environment
General editor Stephen R. Kellert; Associate editors Matthew Black, Richard Haley
London : Simon & Schuster, 1997,
 Buku Referensi
Kellert, Stephen R.
Macmillan encyclopedia of the environment
London : Simon & Schuster, 1997,
 Buku Referensi