Penggayaan APA

Enquiry letters. ([s.a]). [s.l]: [s.n].

Chicago Style

Enquiry letters. . [s.l]: [s.n], [s.a]. Text.

MLA Style

Enquiry letters. . [s.l]: [s.n], [s.a]. Text.

Turabian Style

Enquiry letters. [s.l]: [s.n], [s.a]. Print.