Crutchfield, J. A., & Pontecorvo, G. (1969). The Pacific salmon fisheries: A study of irrational conservation. Published for Resources for the Future by Johns Hopkins Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Crutchfield, James Arthur, و Giulio Pontecorvo. The Pacific Salmon Fisheries: A Study of Irrational Conservation. [Baltimore]: Published for Resources for the Future by Johns Hopkins Press, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Crutchfield, James Arthur, و Giulio Pontecorvo. The Pacific Salmon Fisheries: A Study of Irrational Conservation. Published for Resources for the Future by Johns Hopkins Press, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.