APA (7e ed.) Bronvermelding

McCullough, J. F. (1922). Looking to our foundations. The Economic press.

Chicago (17e ed.) Bronvermelding

McCullough, James F. Looking to Our Foundations. Geneva, Ill.: The Economic press, 1922.

MLA (8e ed.) Bronvermelding

McCullough, James F. Looking to Our Foundations. The Economic press, 1922.