Janick, Jules; Paull, Robert E. (编). The Encyclopedia of Fruit and Nuts: 808. 2008 [13 July 2015]. (原始内容存档于2019-12-30). Duarte, Odilo; Paull, Robert E. Exotic
椰子水、椰青水,是椰子果实内的透明液体。在果实发育时,这些液体是在胚乳内。在热带地区,椰子水是常见的饮料。此外,椰子水可以发酵以制造椰果。 Janick J, Paull RE. Cocos in The Encyclopedia of Fruit and Nuts. 2008: 109–113 [11 May 2015]
Environmental Protection Agency. [November 4, 2007]. (原始内容存档于October 22, 2007). Paull, John (2013) "The Rachel Carson Letters and the Making of Silent Spring"
Steiner - Alchemy of the Everyday, Vitra Design Museum: Weil am Rhein. Paull, John (2011) "A Postcard from Stuttgart: Rudolf Steiner's 150th anniversary