., Klein, M. J. (., Ehrenfest, P. (. I., Ehrenfest-Afanassjewa, T. (. (. I., Einstein, A. (. I., Ehrenfest, T. (., & Ehrenfest-Afanaseva, T. (. [Re-]Reading what I wrote in my letter, I feel that I may not have been explicit: .MLA Citation
, et al. [Re-]Reading What I Wrote in My Letter, I Feel That I May Not Have Been Explicit: .