Springhouse Corporation. (1991). Diagnostic tests. Springhouse Corp.
Cita Chicago (17th ed.)Springhouse Corporation. Diagnostic Tests. Springhouse, PA: Springhouse Corp, 1991.
Cita MLA (9th ed.)Springhouse Corporation. Diagnostic Tests. Springhouse Corp, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.