Collins, G. R. (1973). Overcoming anxiety. Key Publishers.
Tohutoru Kātū Chicago (17th ed.)Collins, Gary R. Overcoming Anxiety. Illinois: Key Publishers, 1973.
Tohutoro MLA (9th ed.)Collins, Gary R. Overcoming Anxiety. Key Publishers, 1973.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.