Gaya APA

Lester, James D.. (2012). Writing Research Papers: A Complete Guide . New York: PEARSON Longman.

Gaya Chicago

Lester, James D.. Writing Research Papers: A Complete Guide. New York: PEARSON Longman, 2012. .

Gaya MLA

Lester, James D.. Writing Research Papers: A Complete Guide. New York: PEARSON Longman, 2012. .

Gaya Turabian

Lester, James D.. Writing Research Papers: A Complete Guide. New York: PEARSON Longman, 2012. .