[https://books.google.com/books?id=VM_E6paCnbMC&pg=PA50&lpg=PA50&dq=operation+SN+wwii+japanese&source=bl&ots=CdNf_UYogL&sig=OjcAyNf-7T1yyBCa8zaNvrX0A5k&hl=en&sa=X&ved=0CDcQ6AEwBGoVChMItf-jwp7uxgIVjjCICh2zVAVL#v=onepage&q=operation%20SN%20wwii%20japanese&f=false Japanese Army in World War II, The South Pacific and New Guinea, 1942-43], contains information regarding Operation SN and a summary of the plans behind it. | [https://books.google.com/books?id=VM_E6paCnbMC&pg=PA50&lpg=PA50&dq=operation+SN+wwii+japanese&source=bl&ots=CdNf_UYogL&sig=OjcAyNf-7T1yyBCa8zaNvrX0A5k&hl=en&sa=X&ved=0CDcQ6AEwBGoVChMItf-jwp7uxgIVjjCICh2zVAVL#v=onepage&q=operation%20SN%20wwii%20japanese&f=false Japanese Army in World War II, The South Pacific and New Guinea, 1942-43], contains information regarding Operation SN and a summary of the plans behind it. |