APA-viite (7. p.)

Helfand, W. H. (2000). The nightingale's song: Nurses and nursing in the Ars Medica Collection of the Philadelphia Museum of Art. Philadelphia Museum of Art.

Chicago-viite (17. p.)

Helfand, William H. The Nightingale's Song: Nurses and Nursing in the Ars Medica Collection of the Philadelphia Museum of Art. Philadelphia, Pa.: Philadelphia Museum of Art, 2000.

MLA-viite (8. p.)

Helfand, William H. The Nightingale's Song: Nurses and Nursing in the Ars Medica Collection of the Philadelphia Museum of Art. Philadelphia Museum of Art, 2000.