APA

Estados Unidos, Government Printing Office (Estados Unidos), . (1959). Procurement handbook. Washington: Government Printing Office.

Chicago

Estados Unidos, Government Printing Office (Estados Unidos), . 1959. Procurement handbook. Washington: Government Printing Office.

Harvard

Estados Unidos, Government Printing Office (Estados Unidos), . (1959). Procurement handbook. Washington: Government Printing Office.

MLA

Estados Unidos, Government Printing Office (Estados Unidos), . Procurement handbook. Washington: Government Printing Office. 1959.