Gaya APA

SUMIHARTI, R, M, &, Y. (2007). WORDS OF WISDOM : LEADERSHIP (Edisi Pertama). : ERLANGGA.

Gaya MLA

SUMIHARTI, RATRI, MEDYA, &, YATI. "WORDS OF WISDOM : LEADERSHIP". Edisi Pertama : ERLANGGA, 2007. Text.