Lyons, John
Language and linguistics: an introduction/John Lyons
New York Cambridge University Press 1992,
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Lyons, Claire L., 1955-
The archaic cemeteries / Claire L. Lyons
Princenton University, 1996
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Life Span development
edited by Patrick C.L. Heaven
Harcourt Brace Javanovich, 1992
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Santrock, John W.
Life-Span development
2002
 Multimedia
Santrock, John W.
Life-span development
McGraw-Hill, 2008
 Buku Teks SO