Sentence Types and Sentence Structures Revisited
http://www.stc-india.org/indus/042005/grammardose.htm

Gururaj, B.S. and N.R. Prabhat
Indus
2005

Abstract:

Before we discuss sentence types and structures, let us regard writing as a donut. When talking of sentence types, we will consider four building blocks of the donut.