Black, M., & Edelman, J. (1970). Plant growth. Heinemann Educational.
Cita Chicago (17th ed.)Black, Michael, i Jack Edelman. Plant Growth. London: Heinemann Educational, 1970.
Cita MLA (9th ed.)Black, Michael, i Jack Edelman. Plant Growth. Heinemann Educational, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.