how will write this one ( Shelly, Cashman, and Vermaat, 2006)

Shelly et al.,2006) is it correct?

4 answers

No. Please see both links below.

http://owl.english.purdue.edu/owl/resource/560/06/

http://owl.english.purdue.edu/owl/resource/560/03/
I mean in citing sources
No, it is not correct. See the sources Writeacher give you.
ok. I am wrong.. sorry.. hehe