Enthusiasm.

The Superpromoter = the Power of Enthusiasm. by: (Electronic resources)

The psychology of passion : = a dualistic model / by: (Language materials, printed)

Understanding passion = the key to success / by: (Electronic resources)

Customer relations- Management.

Emotions.

Business and Management.

Biological Psychology.

Developmental Psychology.

Relationship marketing.

Enthusiasm.

Anger.

Sales & marketing.

Social Psychology.