Gaya APA

S., R, N., Geoffry, M, P. (2011). Sleep Disorders and Sleep Promotion in Nursing Practice .EBOOK . : Springer Publishing Company.

Gaya MLA

S., Redeker, Nancy., Geoffry, McEnany, Phillips. "Sleep Disorders and Sleep Promotion in Nursing Practice .EBOOK". : Springer Publishing Company, 2011. CD-ROM.