Tohutoro APA (7th ed.)

LEWIS,John P. (1959). Business Conditions analysis.: Lewis, John P. Mcgraw-Hill.

Tohutoru Kātū Chicago (17th ed.)

LEWIS,John P. Business Conditions Analysis.: Lewis, John P. Newyork: Mcgraw-Hill, 1959.

Tohutoro MLA (9th ed.)

LEWIS,John P. Business Conditions Analysis.: Lewis, John P. Mcgraw-Hill, 1959.