| 1 |
| Fisher, Roger
Getting to yes : negotiating an agreement without giving in / Roger Fisher, William Ury and Bruce Patton . — 2nd ed. — London : Random House, 1999. — XV, 207 p. ; 20 cm. — | 
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| 2 |
| Fisher, Roger
Getting to yes : negotiating an agreement without giving in / Roger Fisher, William Ury and Bruce Patton . — 2nd ed. — London : Random House, 1999. — XV, 207 p. ; 20 cm. — |
|
| 3 |
| Fisher, Roger
Getting to yes : negotiating an agreement without giving in / Roger Fisher, William Ury and Bruce Patton . — 2nd ed. — London : Random House, 1999. — XV, 207 p. ; 20 cm. — |
|
| 4 |
| Fisher, Roger
Getting to yes : negotiating an agreement without giving in / Roger Fisher, William Ury and Bruce Patton . — 2nd ed. — London : Random House, 1999. — XV, 207 p. ; 20 cm. — |
|
| 5 |
| Fisher, Roger
Getting to yes : negotiating an agreement without giving in / Roger Fisher, William Ury and Bruce Patton . — 2nd ed. — London : Random House, 1999. — XV, 207 p. ; 20 cm. — |
|
| 6 |
| Fisher, Roger
Obtenga el sí : el arte de negociar sin ceder / Roger Fisher, William Ury y Bruce Patton . — Barcelona : Gestión 2000, [2008]. — 214 p. ; 23 cm. — | 
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| 7 |
| Fisher, Roger
Obtenga el sí : el arte de negociar sin ceder / Roger Fisher, William Ury y Bruce Patton . — Barcelona : Gestión 2000, [2008]. — 214 p. ; 23 cm. — |
|
| 8 |
| Fisher, Roger
Obtenga el sí : el arte de negociar sin ceder / Roger Fisher, William Ury y Bruce Patton . — Barcelona : Gestión 2000, [2008]. — 214 p. ; 23 cm. — |
|
| 9 |
| Fisher, Roger
Obtenga el sí : el arte de negociar sin ceder / Roger Fisher, William Ury y Bruce Patton . — Barcelona : Gestión 2000, [2008]. — 214 p. ; 23 cm. — |
|
| 10 |
| Fisher, Roger
Obtenga el sí : el arte de negociar sin ceder / Roger Fisher, William Ury y Bruce Patton . — Barcelona : Gestión 2000, [2008]. — 214 p. ; 23 cm. — |
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