Appelqvist, P. (1972). Carcinoma of the oesophagus and gastric cardia: A retrospective study based on statistical and clinical material from Finland. [Distributed by the Almqvist & Wiksell, Stockholm].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Appelqvist, Pertti. Carcinoma of the Oesophagus and Gastric Cardia: A Retrospective Study Based on Statistical and Clinical Material from Finland. Helsinki: [Distributed by the Almqvist & Wiksell, Stockholm], 1972.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Appelqvist, Pertti. Carcinoma of the Oesophagus and Gastric Cardia: A Retrospective Study Based on Statistical and Clinical Material from Finland. [Distributed by the Almqvist & Wiksell, Stockholm], 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.