APA
Ceylon G. O. . C. A. S. (. O., Ceylon G. O. . C. A. S. (. O., . (1970). Statistical abstract of Ceylon 1967-1968. Colombo: Govt Printing.
Chicago
Ceylon Government Of Census And Statistics (Deptt Of-), Ceylon Government Of Census And Statistics (Deptt Of-), . 1970. Statistical abstract of Ceylon 1967-1968. Colombo: Govt Printing.
Harvard
Ceylon G. O. . C. A. S. (. O., Ceylon G. O. . C. A. S. (. O., . (1970). Statistical abstract of Ceylon 1967-1968. Colombo: Govt Printing.
MLA
Ceylon Government Of Census And Statistics (Deptt Of-), Ceylon Government Of Census And Statistics (Deptt Of-), . Statistical abstract of Ceylon 1967-1968. Colombo: Govt Printing. 1970.
