Pressman, Ian; David Singmaster (June 1989). ""The Jealous Husbands" and "The Missionaries and Cannibals"". The Mathematical Gazette. The Mathematical Association. 73 (464): 73–81. doi:10.2307/3619658. JSTOR3619658.
Ascher, Marcia (February 1990). "A River-Crossing Problem in Cross-Cultural Perspective". Mathematics Magazine. Mathematical Association of America. 63 (1): 26–29. doi:10.2307/2691506. JSTOR2691506.
Pressman, Ian; David Singmaster (June 1989). ""The Jealous Husbands" and "The Missionaries and Cannibals"". The Mathematical Gazette. The Mathematical Association. 73 (464): 73–81. doi:10.2307/3619658. JSTOR3619658.
Ascher, Marcia (February 1990). "A River-Crossing Problem in Cross-Cultural Perspective". Mathematics Magazine. Mathematical Association of America. 63 (1): 26–29. doi:10.2307/2691506. JSTOR2691506.