Murdoko, E. W. H. (2021). What it takes to be an excellent leader / Widijo Hari Murdoko. Gramedia.
Lua i Stíl Chicago (17ú heag.)Murdoko, E. Widijo Hari. What It Takes to Be an Excellent Leader / Widijo Hari Murdoko. Gramedia, 2021.
Lua MLA (8ú heag.)Murdoko, E. Widijo Hari. What It Takes to Be an Excellent Leader / Widijo Hari Murdoko. Gramedia, 2021.
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