Internationales Marketing und Exportmanagement (3. Aufl.). - Gerald Albaum; Jesper Strandskov; Edwin Duerr (Pearson Studium, 2001)

Self-efficacy beliefs and direct selling sales performance. - Robert A. Peterson; Gerald Albaum; Victoria L. Crittenden (Int. J. Appl. Decis. Sci., 2020)