Cita APA

 Portnof, J. E. (2010).  First aid Q & A for the NBDE part II.  McGraw-Hill Medical.

Citación estilo Chicago

 Portnof, Jason E.  First Aid Q & A for the NBDE Part II.  McGraw-Hill Medical, 2010.

Cita MLA

 Portnof, Jason E.  First Aid Q & A for the NBDE Part II.  McGraw-Hill Medical, 2010.