Pekka Hakkarainen
发表
Helen Sanders,
Pekka Hakkarainen,
2015
.
Pekka Hakkarainen,
Tuukka Tammi,
Christoffer Tigerstedt,
2007
.
Stephen Selkowitz,
Maurya McClintock,
Eleanor S. Lee,
2002
.
Inês L. Azevedo,
Pekka Hakkarainen,
Jihoon Min,
2015
.
Aili Malm,
Pekka Hakkarainen,
Tom Decorte,
2019,
Methodological Innovations.
Aili Malm,
Martin Bouchard,
Holly Nguyen,
2015,
The International journal on drug policy.
Anne-Sofie Christensen,
Aili Malm,
Martin Bouchard,
2015,
The International journal on drug policy.
Aili Malm,
Martin Bouchard,
Holly Nguyen,
2012
.