Cita APA (7th ed.)

Johnson, B. L. C., & Scrivenor, M. L. M. (1981). Sri Lanka, land, people and economy. Heinemann Educational Books.

Cita Chicago (17th ed.)

Johnson, B. L. C., i M. Le M. Scrivenor. Sri Lanka, Land, People and Economy. London ; Exeter, N.H.: Heinemann Educational Books, 1981.

Cita MLA (8th ed.)

Johnson, B. L. C., i M. Le M. Scrivenor. Sri Lanka, Land, People and Economy. Heinemann Educational Books, 1981.