Gaya APA

Arnold Gesell, MD. (1940). The First Five Years of Life . London: Harper&Brothers Publishers.

Gaya Chicago

Arnold Gesell, MD. The First Five Years of Life. London: Harper&Brothers Publishers, 1940. Text.

Gaya MLA

Arnold Gesell, MD. The First Five Years of Life. London: Harper&Brothers Publishers, 1940. Text.

Gaya Turabian

Arnold Gesell, MD. The First Five Years of Life. London: Harper&Brothers Publishers, 1940. Print.