Koopman, P. C. (1960). Neurotransmitters and their chemical derivatives: A study on the relationship between structure and activity.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Koopman, Petrus Cornelis. Neurotransmitters and Their Chemical Derivatives: A Study on the Relationship Between Structure and Activity. Rotterdam, 1960.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Koopman, Petrus Cornelis. Neurotransmitters and Their Chemical Derivatives: A Study on the Relationship Between Structure and Activity. 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.