Frodin, D. G. (2001). Guide to standard floras of the world: An annotated, geographically arranged systematic bibliography of the principal floras, enumerations, checklists, and chorological atlases of different areas (2nd ed.). Cambride University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Frodin, D. G. Guide to Standard Floras of the World: An Annotated, Geographically Arranged Systematic Bibliography of the Principal Floras, Enumerations, Checklists, and Chorological Atlases of Different Areas. 2nd ed. Cambridge ; New York: Cambride University Press, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Frodin, D. G. Guide to Standard Floras of the World: An Annotated, Geographically Arranged Systematic Bibliography of the Principal Floras, Enumerations, Checklists, and Chorological Atlases of Different Areas. 2nd ed. Cambride University Press, 2001.