Ch'ng, P. W. B. (2013). Prevalence of positive patch test among healthcare workers to natural rubber latex and synthetic rubber gloves = Kelaziman patch test positif antara pekerja penjagaan kesihatan untuk getah asli lateks dan sarung tangan getah tiruan. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ch'ng, Peter Wee Beng. Prevalence of Positive Patch Test Among Healthcare Workers to Natural Rubber Latex and Synthetic Rubber Gloves = Kelaziman Patch Test Positif Antara Pekerja Penjagaan Kesihatan Untuk Getah Asli Lateks Dan Sarung Tangan Getah Tiruan. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ch'ng, Peter Wee Beng. Prevalence of Positive Patch Test Among Healthcare Workers to Natural Rubber Latex and Synthetic Rubber Gloves = Kelaziman Patch Test Positif Antara Pekerja Penjagaan Kesihatan Untuk Getah Asli Lateks Dan Sarung Tangan Getah Tiruan. Universiti Kebangsaan Malaysia, 2013.