Cita APA (7th ed.)

Ward-Stephens & Campbell, A. (1921). Blessed are the pure in heart. G. Schirmer.

Cita Chicago (17th ed.)

Ward-Stephens i Anne Campbell. Blessed Are the Pure in Heart. New York: G. Schirmer, 1921.

Cita MLA (9th ed.)

Ward-Stephens i Anne Campbell. Blessed Are the Pure in Heart. G. Schirmer, 1921.