Horsfall, James Gordon.
Principles of fungicidal action
Chronica Botanica, 1956
 Buku Referensi
Microeconomic principles in action
[edited by] Robert L. Moore and James D. Whitney
Prentice-Hall, 1990
 Buku Teks
Goldstein, Avram
Principles of drug action : the basis of pharmacology
John Wiley & Sons, 1974
 Buku Teks
Starr, Philip C.
Economics principles in action/ Philip C. Starr
Wadsworth, 1984
 Buku Teks
Essentials of pharmacology: introduction to the principles of drug action
edited by John A. Bevan
Harper & Row, 1976
 Buku Teks