Rugg, H. O. (1917). Statistical methods applied to education: A textbook for students of education in the quantitative study of school problems. Houghton Mifflin Company.
Chicago-viite (17. p.)Rugg, Harold Ordway. Statistical Methods Applied to Education: A Textbook for Students of Education in the Quantitative Study of School Problems. Boston, New York [etc.]: Houghton Mifflin Company, 1917.
MLA-viite (8. p.)Rugg, Harold Ordway. Statistical Methods Applied to Education: A Textbook for Students of Education in the Quantitative Study of School Problems. Houghton Mifflin Company, 1917.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.