Cambrige Scientific Abstracts. (1971). Aquatic Sciences and Fisheries Abstracts: ASFA 3:Aquatic poiiution and environmental quality. Cambridge Scienetific Abstracts.
استشهاد بنمط شيكاغوCambrige Scientific Abstracts. Aquatic Sciences and Fisheries Abstracts: ASFA 3:Aquatic Poiiution and Environmental Quality. Cambridge: Cambridge Scienetific Abstracts, 1971.
MLA استشهادCambrige Scientific Abstracts. Aquatic Sciences and Fisheries Abstracts: ASFA 3:Aquatic Poiiution and Environmental Quality. Cambridge Scienetific Abstracts, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.