APA (7. basım) Alıntı

Alexander von Humboldt. (2007). Jahresbericht-Annual Report 2007. Himboldt-foundation.

Chicago Style (17. basım) Atıf

Alexander von Humboldt. Jahresbericht-Annual Report 2007. Bonn: Himboldt-foundation, 2007.

MLA (9th ed.) Atıf

Alexander von Humboldt. Jahresbericht-Annual Report 2007. Himboldt-foundation, 2007.