Dyfyniad APA

Mackey, D., Jenkins, R., & Johnson, S. (2015). Grammar explorer. Boston: National Geographic Learning, Cengage Learning.

Dyfyniad Arddull Chicago

Mackey, Daphne, Rob Jenkins, và Staci Johnson. Grammar Explorer. Boston: National Geographic Learning, Cengage Learning, 2015.

Dyfyniad MLA

Mackey, Daphne, Rob Jenkins, và Staci Johnson. Grammar Explorer. Boston: National Geographic Learning, Cengage Learning, 2015.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.