Pennsylvania State University. College of Business Administration. Center for Research, Pennsylvania State College. Dept. of Economics, Pennsylvania State College. Bureau of Business Research, & Pennsylvania State University. Bureau of Business Research. Pennsylvania business survey. Center for Research of the College of Business Administration [etc.].
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Pennsylvania State University. College of Business Administration. Center for Research, Pennsylvania State College. Dept. of Economics, Pennsylvania State College. Bureau of Business Research, và Pennsylvania State University. Bureau of Business Research. Pennsylvania Business Survey. University Park, Pa.: Center for Research of the College of Business Administration [etc.].
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Pennsylvania State University. College of Business Administration. Center for Research, et al. Pennsylvania Business Survey. Center for Research of the College of Business Administration [etc.].