Hairunnaja Najmuddin. (2003). Psikologi ketenangan hati. Edisi ke 2 (Edisi ke 2.). PTS Publications & Distributor.
Chicago Style (17th ed.) CitationHairunnaja Najmuddin. Psikologi Ketenangan Hati. Edisi Ke 2. Edisi ke 2. Pahang: PTS Publications & Distributor, 2003.
MLA (8th ed.) CitationHairunnaja Najmuddin. Psikologi Ketenangan Hati. Edisi Ke 2. Edisi ke 2. PTS Publications & Distributor, 2003.
Warning: These citations may not always be 100% accurate.