APA

Nowell P. D., Buysse D. J., Reynolds C. F., Hauri P. J., Roth T., Stepanski E. J., Thorpy M. J., Bixler E., Kales A., Manfredi R. L., Vgontzas A. N., Stapf D. M., Houck P. R. & Kupfer D. J. (19971023). Clinical factors contributing to the differential diagnosis of primary insomnia and insomnia related to mental disorders. : The American journal of psychiatry.

Chicago

Nowell P D, Buysse D J, Reynolds C F, Hauri P J, Roth T, Stepanski E J, Thorpy M J, Bixler E, Kales A, Manfredi R L, Vgontzas A N, Stapf D M, Houck P R and Kupfer D J. 19971023. Clinical factors contributing to the differential diagnosis of primary insomnia and insomnia related to mental disorders. : The American journal of psychiatry.

Harvard

Nowell P. D., Buysse D. J., Reynolds C. F., Hauri P. J., Roth T., Stepanski E. J., Thorpy M. J., Bixler E., Kales A., Manfredi R. L., Vgontzas A. N., Stapf D. M., Houck P. R. and Kupfer D. J. (19971023). Clinical factors contributing to the differential diagnosis of primary insomnia and insomnia related to mental disorders. : The American journal of psychiatry.

MLA

Nowell P D, Buysse D J, Reynolds C F, Hauri P J, Roth T, Stepanski E J, Thorpy M J, Bixler E, Kales A, Manfredi R L, Vgontzas A N, Stapf D M, Houck P R and Kupfer D J. Clinical factors contributing to the differential diagnosis of primary insomnia and insomnia related to mental disorders. : The American journal of psychiatry. 19971023.