Nolens, Leonard
Honing en as / Leonard Nolens
EM. Querido's Uitgeverij B.V, 1994
 Buku Teks
Nolens, Leonard
Tweedracht / Leonard Nolens
EM. Querido's Uitgeverij B.V, 1992
 Buku Teks
Woolley, Leonard
A Forgotten kingdom / Leonard Woolley
Penguin Books , 1953
 Buku Teks
Meirovitch, Leonard
Principles and techniques of vibrations / Leonard Meirovitch
Prentice-Hall, 1997
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Weiss, Leonard W.
Economics and society / Leonard W. Weiss
John Wiley & Sons, 1981
 Buku Teks