Young, E.C.
The penguin dictionary of electronics
Penguin Books, 1988
Buku Referensi
Palmer, Alan
The new Penguin dictionary of modern history, 1789-1945
Penguin Books, 1981
Buku Referensi
The Penguin dictionary of mathematics
edited by David Nelson
Penguin Books, 2003
Buku Referensi
Mautner, Thomas
The Penguin dictionary of philosophy
Penguin Book, 2005
Buku Referensi
Fergusson, Rosalind
The penguin rhyming dictionary
Bloomsbury Books, 1985
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