Gaya APA
Janssens, J, S. ( tthn).
Epistola ad universam Societatem de Congregationibus Marianis, 27 Septembris 1948. .
Roma:
SecretCentrCCMM.
Gaya MLA
Janssens, J.B.,, S.J..
"Epistola ad universam Societatem de Congregationibus Marianis, 27 Septembris 1948. ".
Roma:
SecretCentrCCMM,
tthn.
Buku.