National Committee on Agricultural Services (Canada), Agricultural Institute of Canada, & Canadian Society of Technical Agriculturists. Scientific agriculture. National Committee on Agricultural Services [etc.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Committee on Agricultural Services (Canada), Agricultural Institute of Canada, و Canadian Society of Technical Agriculturists. Scientific Agriculture. Ottawa [etc.]: National Committee on Agricultural Services [etc.].
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Committee on Agricultural Services (Canada), et al. Scientific Agriculture. National Committee on Agricultural Services [etc.].
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.