Barnes, Ralph M. (Ralph Mosser)
Work sampling
John Wiley & Sons, 1961
 Buku Teks
Eva Mardiani Suherman
Gambaran beban kerja Perawat di Ruang Rawat Inap Cempaka RSUD Pasar Rebo Tahun 2013 = Description of Nurses workload in Inpatient Room Cempaka at Pasar Rebo Hospital on 2013.
2013
 UI - Skripsi (Membership)
Hansen, Bertrand L.
Quality control theory and applications / Bertrand L. Hansen
Prentice-Hall, 1966
 Buku Teks
Hamburg, Morris
Basic statistics : a modern approach
Harcourt Brace Jovanovick, 1985
 Buku Teks
Chao, Lincoln L.
Statistics for management
Prentice-Hall, 1981
 Buku Teks