Gaya APA

Ellis, J, R. (1992). Nursing In Todays World : Challenges,Issues, Trends . Newyork: J.B. Lippincott Company.

Gaya MLA

Ellis, Janice, Rider. "Nursing In Todays World : Challenges,Issues, Trends". Newyork: J.B. Lippincott Company, 1992. .