It means that the author is a priest of the Congregation of the Holy Cross, a religious order in the Church:
from Wikipedia:
The Congregation of Holy Cross or Congregatio a Sancta Cruce (C.S.C.) is a Catholic congregation of priests and brothers founded in 1837 by Blessed Father Basil Anthony-Marie Moreau, CSC, in Le Mans, France.
A. A. [Milne] .
Authors' names are listed in a works cited by starting with the last name, followed by a comma and then the first name or initials.
To put authors in alphabetical order for APA referencing, list them by their last names in the reference list. If there are multiple authors, arrange them based on the first author's last name. If two authors have the same last name, use their initials to differentiate.
The initials LDN, put after a person's name, generally stand for Licensed Dietitian/Nutritionist.
It is the initials of the ring makers name
Royal academician.
N.kamalesh
professional engineer
When a work has two authors with the same last name, it is important to include their first initials in the citation to differentiate between them. This helps to accurately attribute the work to the correct author.
Certified Health Coach
Doctor of Medical Dentistry
It is the initials of the ring makers name