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Studiemotivatie en faalangst nader bekeken
Willy Lens, Eric Depreeuw
Bok Nederlandsk 1998
Negative motivation is half the story : achievement motivation combines positive and negative motivation (elaborated version)
Per Rand, Willy Lens, Ben Decock
Bok Engelsk 1989 · Les boka på nett
Cognition in human motivation and learning : Festschrift for J. (R.) Nuttin
edited by Gery d'Ydewalle, Willy Lens ; c...
Bok Språk ikke angitt 1981