APA (7th ed.) Citation

SIMORANGKIR, O., & SIMORANGKIR, O. (1983). Etiket Kantor O.p. Simorangkir. Yagrat.

Chicago Style (17th ed.) Citation

SIMORANGKIR, O.P, and O.P SIMORANGKIR. Etiket Kantor O.p. Simorangkir. Yagrat, 1983.

MLA (8th ed.) Citation

SIMORANGKIR, O.P, and O.P SIMORANGKIR. Etiket Kantor O.p. Simorangkir. Yagrat, 1983.

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