Psicologia In 30 Secondi

Gribaudo

Psicologia in 30 secondi                        

Gribaudo

Filosofia in 30 secondi                          

Icon Books

30-Second Psychology: The 50 Most Thought-provoking Psychology Theories, Each Explained in Half a Minute (English Edition)

Icon Books Ltd

30-Second Theories: The 50 Most Thought-provoking Theories in Science

Metro Books

30-Second Psychology: The 50 Most Thought-Provoking Psychology Theories, Each Explained in Half a Minute (2018 Edition)

DNA Publishing

30 seconds psychological techniques 100: How to use psychological technique (Japanese Edition)

Lannoo

Psychologie in 30 seconden: 50 mijlpalen uit de geschiedenis van de psychologie

Meditation in 30 Seconds (English Edition)      

Cat n Dog Theology, Inc.

30 Seconds That Can Change Your Life: Learning to Use the Unused Moments of Life (English Edition)

Independently published

30 Seconds of C.O.U.R.A.G.E. | Stop overthinking | Personal Transformation and Emotional Mental Health: The FRAMEWORK: How to Stop Overthinking, Face Fear, and Take Bold Action in Less Than a Minute