Shishkov, B. (2021). Business Modeling and Software Design: 11th International Symposium on Business Modeling and Software Design, BMSD 2021, which took place in Sofia, Bulgaria, in July 2021. Proceedings. Springer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Shishkov, Boris. Business Modeling and Software Design: 11th International Symposium on Business Modeling and Software Design, BMSD 2021, Which Took Place in Sofia, Bulgaria, in July 2021. Proceedings. Cham, Switzerland: Springer, 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Shishkov, Boris. Business Modeling and Software Design: 11th International Symposium on Business Modeling and Software Design, BMSD 2021, Which Took Place in Sofia, Bulgaria, in July 2021. Proceedings. Springer, 2021.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.