A primary verb is one of the three verb types … (Chaulker & Weiner, 2009, para. 7)

Australia was one of the early adopters of the pop chart ratings (Williams, 2009)

The tone of the poem is affected by the use of intervening words (“Tmesis”, n.d.) that cause ….

Chaulker, S., & Weiner, E. (Eds.). (2009). The Oxford dictionary of English grammar. Retrieved from http://www.oxfordreference.com.ezproxy.une.edu.au/views/SEARCH_RESULTS.html?y=10&q=verbs&category=t28&x=11&ssid=176555436&scope=book&time=0.305971972615943

Williams, J. (Ed.). (2009). Encyclopedia of Australian rock and pop. Sydney, Australia: Methuen.

Tmesis. (n.d.) In Oxford English Dictionary Online (12th ed.). Retrieved from http://www.oed.com