Παραπομπή σε μορφή APA (7η εκδ.)

White Peter D. (2007). How common is chronic fatigue syndrome; how long is a piece of string? BMC.

Παραπομπή σε μορφή Chicago (17η εκδ.)

White Peter D. How Common Is Chronic Fatigue Syndrome; How Long Is a Piece of String? BMC, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

White Peter D. How Common Is Chronic Fatigue Syndrome; How Long Is a Piece of String? BMC, 2007.