In the United States, large organizations include National Association of Student Personnel Administrators (NASPA) and American College Personnel Association (ACPA). NASPA members are committed to serving college students by embracing the core values of diversity, learning, integrity, collaboration, access, service, fellowship, and the spirit of inquiry. NASPA and ACPA published the "Principles of Good Practice for Student Affairs" in 1997 which build off of those published by Chickering and Gamson (1987). These principles emphasize the profession's core value of promoting services and program delivery that are student-centered and address student needs beyond the academic environment. These principles are not prescriptive and provide guidelines for professionals from varying service areas and institutions to adapt to their unique social, political, and campus contexts while promoting the values of the profession. As well, there are publications that relate to the Student Affairs field such as the Journal of College Student Development and The Chronicle of Higher Education.