Another great reference :)


https://www.cengagebrain.com/shop/content/littlejohn95877_0495095877_02.01_chapter01.pdf

http://delivery.acm.org.libraryproxy.griffith.edu.au/10.1145/590000/584093/p3-shannon.pdf?ip=132.234.242.15&acc=ACTIVE%20SERVICE&CFID=47145899&CFTOKEN=53746527&__acm__=1318343613_7911e9607325020eaf723d55891b2011

http://books.google.com.au/books?hl=en&lr=&id=r3si08flH0AC&oi=fnd&pg=PR9&dq=animals+speak&ots=xF5XXwVqp-&sig=mGma2tcfcOH697V-cL0_HIipYwo#v=onepage&q&f=false

http://www.people-communicating.com/what-is-communication.html

This one is about humans' interpretation and understanding of the animal's speech and communication:http://scitation.aip.org.libraryproxy.griffith.edu.au/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JASMAN000070000002000340000001&idtype=cvips&doi=10.1121/1.386782&prog=normal

Another: http://www.jstor.org.ezp01.library.qut.edu.au/stable/pdfplus/3798575.pdf?acceptTC=true