Pearson, Geoffrey and Hobbs, D.. 2004. 'E' is for enterprise: Middle level drug markets in ecstasy and stimulants. Addiction Research and Theory, 12(6), pp. 565-576. ISSN 16066359 [Article]

Pearson, Geoffrey and Hobbs, D.. 2003. King Pin? A Case Study of a Middle Market Drug Broker. The Howard Journal of Criminal Justice, 42(4), pp. 335-347. ISSN 02655527 [Article]

Pearson, Geoffrey. 2001. Normal Drug Use: Ethnographic Fieldwork Among an Adult Network of Recreational Drug Users in Inner London. Substance Use & Misuse, 36(1-2), pp. 167-200. ISSN 10826084 [Article]

Pearson, Geoffrey and Hobbs, D.. 2001. Middle Market Drug Distribution: Home Office Research Study. Home Office. ISBN 1840827629 [Book]