Gaya APA

Gubellini, L, A, K, A, C, E. (1962). INTRODUCTION TO BUSINESS ENTERPRISE (Ed. 4). Amerika: Libary of congress catalogi in publiatn data.

Gaya MLA

Gubellini, Lyman, A, Keith, And, Carlo, E.. "INTRODUCTION TO BUSINESS ENTERPRISE". Ed. 4 Amerika: Libary of congress catalogi in publiatn data, 1962. Book-PS.