Thibault, Paul J.
Re-reading Saussure: the dynamics of signs in social life
Routledge, 1997
 Buku Teks
Harris, Roy
Signs of writing
Routledge, 1995
 Buku Teks
Dermatological signs of internal desease
Jeffrey P. Callen...[et.al.]
W.B. Saunders Company, 1995
 Buku Teks
Vital signs 2002
WW Norton and Company, 2002
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Broadbent, Geoffrey
Signs, symbols and architecture
Chichester: John Wiley & Sons, 1980
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