APA (7. basım) Alıntı

Schmidt, C. (1920). Nature study and agriculture. D. C. Heath.

Chicago Style (17. basım) Atıf

Schmidt, Charles. Nature Study and Agriculture. Boston: D. C. Heath, 1920.

MLA (9th ed.) Atıf

Schmidt, Charles. Nature Study and Agriculture. D. C. Heath, 1920.