Gaya APA
Harding, Helen. (1996).
Secretarial procedures : theory and applications (2e).
Singapura:
Longman.
Gaya Chicago
Harding, Helen.
Secretarial procedures : theory and applications.
2e
Singapura:
Longman,
1996.
Buku.
Gaya MLA
Harding, Helen.
Secretarial procedures : theory and applications.
2e
Singapura:
Longman,
1996.
Buku.
Gaya Turabian
Harding, Helen.
Secretarial procedures : theory and applications.
2e
Singapura:
Longman,
1996.
Buku.