Gaya APA

Lehrer, Robert N.. (1983). White collor productivity . New York: McGraw Hill.

Gaya Chicago

Lehrer, Robert N.. White collor productivity. New York: McGraw Hill, 1983. Text.

Gaya MLA

Lehrer, Robert N.. White collor productivity. New York: McGraw Hill, 1983. Text.

Gaya Turabian

Lehrer, Robert N.. White collor productivity. New York: McGraw Hill, 1983. Print.