TVXQ. [7th album]. Tense
SM Entertainment, 2014
 Buku Teks
Comrie, Bernard, 1947-
Tense
Cambridge University Press, 1985
 Buku Teks SO
Poutsma, H.
Mood and tense of the English verb
P. Noordhoff, 1922
 Buku Teks SO
Hornstein, Norbert
As times goes by tense and universal grammar
MIT Press, 1990
 Buku Teks SO
Hollenbach, Barbara E.
Tense-negation interplay in Copala trique
[Publisher not identified], 1976
 Buku Teks SO