Cita APA (7th ed.)

Jardine, J. (1970). Nat Phil 3: Workbook. Heinemann Educational Books.

Cita Chicago (17th ed.)

Jardine, Jim. Nat Phil 3: Workbook. London: Heinemann Educational Books, 1970.

Cita MLA (9th ed.)

Jardine, Jim. Nat Phil 3: Workbook. Heinemann Educational Books, 1970.