SHEPHERD, P., & Penerjemah: Laila Qadria. (2018). The Positive Approach: Manfaat Berpikir dan Bersikap Positif. Yogyakarta: Mitra Media Nusantara.
Dyfyniad Arddull ChicagoSHEPHERD, Peter, and Penerjemah: Laila Qadria. The Positive Approach: Manfaat Berpikir Dan Bersikap Positif. Yogyakarta: Mitra Media Nusantara, 2018.
Dyfyniad MLASHEPHERD, Peter, and Penerjemah: Laila Qadria. The Positive Approach: Manfaat Berpikir Dan Bersikap Positif. Yogyakarta: Mitra Media Nusantara, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.