Harvard:
Headland, T.N. and Headland, J.D. xxxx, "Dumagat (Casiguran)-English Dictionary",
APA:
Headland, T.N. and Headland, J.D. (xxxx). Dumagat (Casiguran)-English Dictionary. .
Chicago:
Headland, Thomas N. and Janet D. Headland. xxxx. "Dumagat (Casiguran)-English Dictionary." .
MLA:
Headland, Thomas N. and Janet D. Headland. "Dumagat (Casiguran)-English Dictionary." (xxxx): .
Citation within the text:
(Headland & Headland xxxx)
Zotero:
Save reference in Zotero
BibTeX:
@article{headlandxxxxdumagat,
  title = {Dumagat (Casiguran)-English Dictionary},
  author = {HEADLAND, Thomas N. and HEADLAND, Janet D.},
  year = {xxxx},
  address = {Pacific Linguistic Series C., no.28},
  keywords = {Philippines;Language},
  x-extra = {Pacific Linguistic Series C., no.28},
  BAS = {243352},
  source = {bas},
}