Cita APA (7a ed.)

SPENGLER, E. H. (1955). Introduction to Business. McGraw-Hill Book Company.

Cita Chicago Style (17a ed.)

SPENGLER, Edwin H. Introduction to Business. McGraw-Hill Book Company, 1955.

Cita MLA (8a ed.)

SPENGLER, Edwin H. Introduction to Business. McGraw-Hill Book Company, 1955.