Porter, C. (1936). School hygiene and the laws of health: A text-book for teachers and students in training ([6th ed.].). Longmans, Green.
Chicago Style aipamenaPorter, Charles. School Hygiene and the Laws of Health: A Text-book for Teachers and Students in Training. [6th ed.]. London: Longmans, Green, 1936.
MLA aipamenaPorter, Charles. School Hygiene and the Laws of Health: A Text-book for Teachers and Students in Training. [6th ed.]. Longmans, Green, 1936.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.