Gray, H. C., & Thorburn, A. D. (1923). A condensed compendium of pharmaceutical knowledge: A quiz book designed for the use of pharmaceutical students preparing themselves for examination in colleges of pharmacy, and before the pharmaceutical examining boards of the various states (15th ed.). M. M. Gray.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gray, H. C., و A. D. Thorburn. A Condensed Compendium of Pharmaceutical Knowledge: A Quiz Book Designed for the Use of Pharmaceutical Students Preparing Themselves for Examination in Colleges of Pharmacy, and Before the Pharmaceutical Examining Boards of the Various States. 15th ed. Chicago, Ill.: M. M. Gray, 1923.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gray, H. C., و A. D. Thorburn. A Condensed Compendium of Pharmaceutical Knowledge: A Quiz Book Designed for the Use of Pharmaceutical Students Preparing Themselves for Examination in Colleges of Pharmacy, and Before the Pharmaceutical Examining Boards of the Various States. 15th ed. M. M. Gray, 1923.