Gurr, E. 1956. A practical manual of medical and biological staining techniques. Interscience Publishers, New York.
Humason, G. L. 1966. Animal tissue technique. Greeman Co., W. H. Freeman & Co., New York.
Lillie, R. D. 1954. Histopathologic technique and practical histochemistry. Blakiston, New York. 3rd ed.
Novelli, A. 1962. A short method for chondriome. J. hitsochem. cytochem. 10: 102–103.
Pantin, C. F. A. 1946. Notes on microscopical technique for zoologists. Cambridge Univ. Press.
Urquhart, F. A. 1960. The monarch butterfly. Univ. of Toronto Press.
Urquhart, F. A. 1972. The effect of micro-cauterizing the AlPPM (“gold spot” of authors) of the pupa of the monarch butterfly, Danaus p. plexippus (Lepidoptera: Danaidae). Can. Ent. 104: 991–993.
Urquhart, F. A. and Tang, A. P. S.. 1970. The effect of cauterizing the PPM (“gold spot” of authors) of the pupa of the monarch butterfly (D. plexippus). J. Res. Lepidop. 9(3): 157–167.