Gaya APA

Wiest, J, D., Levy, F, K. (1991). A Management Guide To PERT/CPM: With GER/PDM/DCPM and other Networks (2). New Jersey: Prentice-Hall.

Gaya MLA

Wiest, Jerome, D.., Levy, Ferdinand, K.. "A Management Guide To PERT/CPM: With GER/PDM/DCPM and other Networks". 2 New Jersey: Prentice-Hall, 1991. Text.