APA
Nierenberg Gerad I,, . (1968). The art of negotiating : Psychological strategies for gaining advantageous bargains. London: Barnes & Noble Books.
Chicago
Nierenberg Gerad I,, . 1968. The art of negotiating : Psychological strategies for gaining advantageous bargains. London: Barnes & Noble Books.
Harvard
Nierenberg Gerad I,, . (1968). The art of negotiating : Psychological strategies for gaining advantageous bargains. London: Barnes & Noble Books.
MLA
Nierenberg Gerad I,, . The art of negotiating : Psychological strategies for gaining advantageous bargains. London: Barnes & Noble Books. 1968.