English auxiliaries : structure and history / Anthony R. Warner
Cambridge University Press, 2009
 eBooks
Wakeford, Richard E.
Teaching for effective learning : a short guide for teachers of health auxiliaries
World Health Organization, 1974
 Buku Teks
Salvadori, Mario
Structure in architecture
Prentice-Hall, 1963
 Buku Teks
Schodek, Daniel L.
Structure in sculpture
MIT Press, 1993
 Buku Teks
Gelderen, Elly van
Clause structure
Cambridge University Press, 2013
 Buku Teks