Hazeltine,Barrett, & Bull,Christopher. (1999). Appropriate technology: :tools,choices and implications. Academic press.
استشهاد بنمط شيكاغوHazeltine,Barrett, و Bull,Christopher. Appropriate Technology: :tools,choices and Implications. USA: Academic press, 1999.
MLA استشهادHazeltine,Barrett, و Bull,Christopher. Appropriate Technology: :tools,choices and Implications. Academic press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.