APA (7th ed.) Zitazioa

Buskirk, R. H. Concepts of business: : an introduction to the business system. Oak Tree Pr.

Chicago Style (17th ed.) Zitazioa

Buskirk, Richard H. Concepts of Business: : An Introduction to the Business System. San Diego, Calif.: Oak Tree Pr.

MLA (9th ed.) Zitazioa

Buskirk, Richard H. Concepts of Business: : An Introduction to the Business System. Oak Tree Pr.