Lexington, MA: Heath. Lijphart, A. (2009). Demokraatia mustrid. Tallinn: Tallinna Raamatutrükikoda. Patterson, T. E. (2013). The American democracy. New York: McGraw-Hill. The American Presidency. (n.d.). In Encyclopedia Britannica online. Retrieved from http://www.britannica.com/presidents/article-284371 (19.02.2014). The White House. The Cabinet. Retrieved from http://www.whitehouse.gov/administration/cabinet. (21.02.2014). United States House of Representatives. Commitees. Retreived from http://www.house.gov/committees/ (24.02.2014). U.S Senate. Committees. Retreived from http://www.senate.gov/pagelayout/committees/d_three_sections_with_tea sers/committees_home.htm (24.02.2014) Wilson, J. Q. (1998). American government: institutions and policies. Hiljuti USAs aset leidnud sündmuste ülevaade Obama nõuab maksumuudatusi Järgneva ehk 2015. aasta eelarve ettepanekus, mis küündib 3.9 triljoni dollarini, kajastub miinimumpalga tõus ning muudatused maksusoodustustes
com/doc/27429437/Soil-Microbiology Lipþa, F. D. (n.d.). INVESTIGATIONS ON THE INFLUENCE OF FERTILIZATION AND MAIZE ( ZEA MAYS L .) ROOT EXUDATES ON SOIL MICROFLORA. Martin, G., Guggiari, M., Bravo, D., Zopfi, J., Cailleau, G., Aragno, M., Job, D., et al. (2012). Fungi, bacteria and soil pH: the oxalate-carbonate pathway as a model for metabolic interaction. Environmental microbiology, 14(11), 296070. doi:10.1111/j.1462- 2920.2012.02862.x My Agriculture Information Bank. Retreived 13 March 2013. http://agriinfo.in/? page=topic&superid=5&topicid=152 OECD.2007. Consensus Document on Safety Information on Transgenic Plants Expressing Bacillus thuringiensis - Derived Insect Control Protein. ENV/JM/MONO (2007) 14. Series on Harmonisation of Regulatory Oversight in Biotechnology. http://www.agbios.com/docroot/articles/07-214-001.pdf Saunders Comprehensive Veterinary Dictionary (2007). Retrieved March 13 2013 from http://medical-dictionary
annaabi.ee 
