APA استشهاد

Hellman, D. A. (1978). State Financial Incentives to Industry. D.C.Heath.

استشهاد بنمط شيكاغو

Hellman, Daryl A. State Financial Incentives to Industry. Toronto: D.C.Heath, 1978.

MLA استشهاد

Hellman, Daryl A. State Financial Incentives to Industry. D.C.Heath, 1978.