APA
Schofield K., . (1973). Heterocyclic compounds. London: Butterwoths.
Chicago
Schofield K, . 1973. Heterocyclic compounds. London: Butterwoths.
Harvard
Schofield K., . (1973). Heterocyclic compounds. London: Butterwoths.
MLA
Schofield K, . Heterocyclic compounds. London: Butterwoths. 1973.