Cita APA (7th ed.)
Hammond, A. L. (2019). Ideas about Substance. Johns Hopkins Press.
Cita Chicago (17th ed.)
Hammond, Albert L. Ideas About Substance. Baltimore: Johns Hopkins Press, 2019.
Cita MLA (9th ed.)
Hammond, Albert L. Ideas About Substance. Johns Hopkins Press, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.