Cita APA (7th ed.)
Robert E. Krieger Publishing Company, Kyle, R. A., & Shampo, M. A. Medicine and Stamps (Edición original 1970.).
Cita Chicago (17th ed.)
Robert E. Krieger Publishing Company, R. A. Kyle, i M. A. Shampo. Medicine and Stamps. Edición original 1970.
Cita MLA (9th ed.)
Robert E. Krieger Publishing Company, et al. Medicine and Stamps. Edición original 1970.
Atenció: Aquestes cites poden no estar 100% correctes.