Unmasking The Social Engineer The Human Element Of SecurityChristopher Hadnagy, Paul F. Kelly, Paul Ekman · First published 2014Open the Tome
je sais que vous mentez ! l'art de détecter les menteurs et les manipulateursPaul Ekman · First published 2011Open the Tome
Giù la maschera. Come riconoscere le emozioni dall'espressione del visoWallace V. Friesen, Paul Ekman · First published 2007Open the Tome
Handbook of methods in nonverbal behavior researchPaul Ekman, Klaus R. Scherer · First published 1982Open the Tome
Emotion in the human face: guide-lines for research and an integration of findingsPaul Ekman, Wallace V. Friesen, Phoebe Ellsworth, Arnold P. Goldstein, Leonard Krasner · First published 1972Open the Tome
