Gaya APA

Zimmerer, T, W. et al (2008). Essentials of entrepreneurship and small business management: keiwrausahaan dan manajemen usaha kecil (5, cet. 1). : Salemba Empat.

Gaya MLA

Zimmerer, Thomas, W. et al. "Essentials of entrepreneurship and small business management: keiwrausahaan dan manajemen usaha kecil". 5, cet. 1 : Salemba Empat, 2008. .