APA
Leddy S., . (1998). Conceptual bases of professional nursing. Philadelphia: Lippincott.
Chicago
Leddy Susan, . 1998. Conceptual bases of professional nursing. Philadelphia: Lippincott.
Harvard
Leddy S., . (1998). Conceptual bases of professional nursing. Philadelphia: Lippincott.
MLA
Leddy Susan, . Conceptual bases of professional nursing. Philadelphia: Lippincott. 1998.