apa in text citation

penn state is a major, public, research-i university serving pennsylvania and the global community. learn more about our undergraduate, graduate, and doctoral degree programs.

purdue university is a world-renowned, public research university that advances discoveries in science, technology, engineering and math. with its flagship campus in west lafayette, indiana, purdue is a land-grant university with a system that has statewide campuses and online, adult-learning and polytechnic programs.

the purdue university online writing lab serves writers from around the world and the purdue university writing lab helps writers on purdue's campus.