Bibliografi : hlm. 281-303
Bibliografi : hlm.509-513
Bibliografi : hlm. 316 - 317
Bibliografi : hlm. 248
Judul asli :"How to stop mowwying and start living"
Judul asli :"The art of happiness"
No Inv.: 110136/S/Perp/07/1c~
No Inv.: 115296/S/Perp/08/1c
No Inv.: 128150/SM/Perp/10/1c