Meriam, J. L. (James L.), author
John Wiley & Sons, 1976
Buku Referensi
Chang, David W., author
Thomson/Delmar Learning, 2006
Buku Teks
Robbins, Robert R., author
John Wiley & Sons, 1981
Buku Teks
Rakich, Jonathon S., author
Health Professions Press, 1992
Buku Referensi
Nunnally, Jum C., author
McGraw-Hill, 1970
Buku Teks