OTFINOSKI STEVEN. (2019). A STEP INTO HISTORY: WORLD WAR I (2019.). SCHOLASTICS PVT. LTD.
芝加哥风格引文OTFINOSKI STEVEN. A STEP INTO HISTORY: WORLD WAR I. 2019. GURUGRAM: SCHOLASTICS PVT. LTD, 2019.
MLA引文OTFINOSKI STEVEN. A STEP INTO HISTORY: WORLD WAR I. 2019. SCHOLASTICS PVT. LTD, 2019.
警告：这些引文格式不一定是100％准确.