Yap, Joey. The BaZi 60 Pillars Life Analysis Method - DING Yin Fire. Joey Yap Research Group, 2013.
Yap, Joey. The BaZi 60 Pillars Life Analysis Method - XIN Yin Metal. Joey Yap Research Group, 2013.
Yap, Joey. The BaZi 60 Pillars Life Analysis Method - REN Yang Water. Joey Yap Research Group, 2013.
Yap, Joey. The Bazi 60 Pillars Life Analysis Method - Ji Yin Earth. Joey Yap Research Group, 2013.
Yap, Joey. The BaZi 60 Pillars Life Analysis Method - JIA Yang Wood. Joey Yap Research Group, 2013.
Yap, Joey. The BaZi 60 Pillars Life Analysis Method - BING Yang Fire. Joey Yap Research Group, 2013.
Report
Yap, Joey. Joey Yap Research International Sdn.Bhd, 2020, pp. 1–5, Joey Yap's Bazi Profiling - Introductory Report For Donald Trump.
Yap, Joey. Joey Yap Research International Sdn.Bhd, 2020, pp. 1–5, Joey Yap's Bazi Profiling - Introductory Report For Joe Biden.
Internet
Fang, Yulius. Pilpres Amerika (USA) 2020: Analisis BaZi - Feng Shui Donald Trump vs Joe Biden. 3 Nov. 2020, konsultasifengshui.com/artikel/pilpres-amerika-usa-2020-analisis-bazi-feng-shui-donald-trump-vs-joe-biden.
