Não informado. (2001). Snellius-expedition in the Eastern part of the Netherlands-East-Indies, 1929-1930. Keminken Zoon.
Citação do estilo Chicago (17ª ed.)Não informado. Snellius-expedition in the Eastern Part of the Netherlands-East-Indies, 1929-1930. Utrecht, Holanda: Keminken Zoon, 2001.
Citação MLA (8ª ed.)Não informado. Snellius-expedition in the Eastern Part of the Netherlands-East-Indies, 1929-1930. Keminken Zoon, 2001.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.