Gaya APA

Lovelth, C., ANDREAS/2021010161004, . (1994). Product plus: how product+service=competitive advantega (1). New York: Mc Graw Hill.

Gaya MLA

Lovelth, Christhoper., ANDREAS/2021010161004, . "Product plus: how product+service=competitive advantega". 1 New York: Mc Graw Hill, 1994. Text.