Ong, C. T. (2004). In search of sleep. Me.
Chicago-viite (17. p.)Ong, Christine T. "In Search of Sleep." Me 2004.
MLA-viite (9. p.)Ong, Christine T. "In Search of Sleep." Me, 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.
Ong, C. T. (2004). In search of sleep. Me.
Chicago-viite (17. p.)Ong, Christine T. "In Search of Sleep." Me 2004.
MLA-viite (9. p.)Ong, Christine T. "In Search of Sleep." Me, 2004.