APA

Lovelock C., . (1994). Produkt Plus. New York: McGraw-Hill, Inc.

Chicago

Lovelock C, . 1994. Produkt Plus. New York: McGraw-Hill, Inc.

Harvard

Lovelock C., . (1994). Produkt Plus. New York: McGraw-Hill, Inc.

MLA

Lovelock C, . Produkt Plus. New York: McGraw-Hill, Inc. 1994.