Greenlalgh, P. (1979). The markets for mint oils and menthol. Tropical Products Institute.
Chicago-viite (17. p.)Greenlalgh, Peter. The Markets for Mint Oils and Menthol. London: Tropical Products Institute, 1979.
MLA-viite (9. p.)Greenlalgh, Peter. The Markets for Mint Oils and Menthol. Tropical Products Institute, 1979.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.