Schultz, F. (1998). Annual editions: Human development 98/99 (26th ed.). Dushkin/McGraw-Hill.

Schultz, Fred. Annual Editions: Human Development 98/99. 26th ed. Guilford, Conn.: Dushkin/McGraw-Hill, 1998.

Schultz, Fred. Annual Editions: Human Development 98/99. 26th ed. Dushkin/McGraw-Hill, 1998.