Tohutoro APA (7th ed.)
ebrary, Inc, Langley, E. J., & Knowles, R. B. (2012). Psychology of sadness. Nova Science Publishers.
Tohutoru Kātū Chicago (17th ed.)
ebrary, Inc, Emile J. Langley, me Roger B. Knowles. Psychology of Sadness. New York: Nova Science Publishers, 2012.
Tohutoro MLA (9th ed.)
ebrary, Inc, et al. Psychology of Sadness. Nova Science Publishers, 2012.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.