APA

Hillman H., Loring L., . (1981). The art of writing business reports & proposals. New York: Vanguard Press.

Chicago

Hillman Howard, Loring Lisa, . 1981. The art of writing business reports & proposals. New York: Vanguard Press.

Harvard

Hillman H., Loring L., . (1981). The art of writing business reports & proposals. New York: Vanguard Press.

MLA

Hillman Howard, Loring Lisa, . The art of writing business reports & proposals. New York: Vanguard Press. 1981.