"Forty Hadith" by Khomeini

The original work in Persian, recently published under the title "Arba`in, ya chihil hadith" was written by Iranian leader Khomeini forty-six years ago and was completed in the month of Muharram 1358 (April-May, 1939). The manuscript of this work, together with that of two other unpublished works of the author, Sharh Du'ae sahar and Adab al-salat, were recovered from the library of the late Akhund al-Hamadani. All the three works have now been published.

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Some shia fellows say that the books on the internet are not correct. Please tell me if this book is not correct and tell me where can i find the correct text of this title. Thanks.