APA
Perrin K. O., . (2009). Understanding the essentials of critical care nursing. Upper Saddle River, N.J: Pearson Prentice Hall.
Chicago
Perrin Kathleen Ouimet, . 2009. Understanding the essentials of critical care nursing. Upper Saddle River, N.J: Pearson Prentice Hall.
Harvard
Perrin K. O., . (2009). Understanding the essentials of critical care nursing. Upper Saddle River, N.J: Pearson Prentice Hall.
MLA
Perrin Kathleen Ouimet, . Understanding the essentials of critical care nursing. Upper Saddle River, N.J: Pearson Prentice Hall. 2009.