Estilo APA

Choy, Penelope. (1978). Basic grammar and usage / Penelope Choy (1 ed.). United States: Hartcourt Brace Jovanovich.

Estilo Chicago

Choy, Penelope. Basic grammar and usage / Penelope Choy. 1 ed. United States: Hartcourt Brace Jovanovich, 1978. IES DyT 9-001 Gral. San Martin.

Estilo MLA

Choy, Penelope. Basic grammar and usage / Penelope Choy. 1 ed. United States: Hartcourt Brace Jovanovich, 1978. IES DyT 9-001 Gral. San Martin.

Estilo Turabian

Choy, Penelope. Basic grammar and usage / Penelope Choy. 1 ed. United States: Hartcourt Brace Jovanovich, 1978. IES DyT 9-001 Gral. San Martin.