Gressel, A. Comment on Environmental assessment of used oil management methods.
استشهاد بنمط شيكاغوGressel, Alan. Comment On Environmental Assessment of Used Oil Management Methods.
MLA استشهادGressel, Alan. Comment On Environmental Assessment of Used Oil Management Methods.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.