Cita APA (7a ed.)
May, R. The Meaning of Anxiety. Norton.
Cita estilo Chicago (17a ed.)
May, Rollo. The Meaning of Anxiety. Nueva York, EUA: Norton.
Cita MLA (9a ed.)
May, Rollo. The Meaning of Anxiety. Norton.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.