Heng, C., & ENGINEERING, M. &. P. (2014). Vertical directivity of train noise.
استشهاد بنمط شيكاغوHeng, C.C., و MECHANICAL & PRODUCTION ENGINEERING. Vertical Directivity of Train Noise. 2014.
MLA استشهادHeng, C.C., و MECHANICAL & PRODUCTION ENGINEERING. Vertical Directivity of Train Noise. 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.