APA

Peach W. N., . (1955). Principles of economics. Homewood, Ill: R.D. Irwin.

Chicago

Peach William Nelson, . 1955. Principles of economics. Homewood, Ill: R.D. Irwin.

Harvard

Peach W. N., . (1955). Principles of economics. Homewood, Ill: R.D. Irwin.

MLA

Peach William Nelson, . Principles of economics. Homewood, Ill: R.D. Irwin. 1955.