APA (7th ed.) Citation

Spiegel, H. W. Current economic problems: 3rd ed. R.D. Irwin, 1961.

Chicago Style (17th ed.) Citation

Spiegel, Henry William. Current Economic Problems: 3rd Ed. Homewood, III.: R.D. Irwin, 1961.

MLA (9th ed.) Citation

Spiegel, Henry William. Current Economic Problems: 3rd Ed. R.D. Irwin, 1961.

Warning: These citations may not always be 100% accurate.