Παραπομπή APA
Biggs, N. L. (1977). Interaction models: Course given at Royal Holloway College, University of London, October-December 1976. Cambridge: Cambridge University Press.
Παραπομπή Chicago StyleBiggs, Norman L. Interaction Models: Course Given At Royal Holloway College, University of London, October-December 1976. Cambridge: Cambridge University Press, 1977.
Παραπομπή MLABiggs, Norman L. Interaction Models: Course Given At Royal Holloway College, University of London, October-December 1976. Cambridge: Cambridge University Press, 1977.
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