Coulson, C.A.
Valence
Oxford University Press, 1972
 Buku Teks
Valence fluctuations in solids
edited by L.M. Falicov, W. Hanke, M.B. Maple
North Holland, 1981
 Buku Teks
Simanjuntak, Aprian Waratorang.
Travel impedance mengendarai sepeda motor serta hubungannya dengan fluktuasi valensi dan arousal = Riding motorcycle travel impedance and its relation with the fluctuation of valence and arousal
2016
 UI - Skripsi Membership
Pauling, Linus
The nature of the chemical bond/Linus pauling
Cornell University Press, 1960
 Buku Teks
Yilmaz, Mahmut Deniz, editor
Orthogonal supramolecular interaction motifs for functional monolayer architectures
Springer, 2012
 eBooks