Gaya APA

Helvie, C, O. (1997). Advanced Practice Nursing In The Community = Praktik Keperawatan Lanjut dalam Kesehatan Masyarakat (-). London: Sage.

Gaya MLA

Helvie, Carl, O.. "Advanced Practice Nursing In The Community = Praktik Keperawatan Lanjut dalam Kesehatan Masyarakat". - London: Sage, 1997. Textbook.