Estilo APA

Abbs, Brian, Freebairn, Ingrid. (1982). Opening Strategies 1 : An integrated languaje course for beginners of english / Brian Abbs , Ingrid Freebairn (1). england: Longman.

Estilo Chicago

Abbs, Brian, Freebairn, Ingrid. Opening Strategies 1 : An integrated languaje course for beginners of english / Brian Abbs , Ingrid Freebairn. 1 england: Longman, 1982. IES DyT 9-001 Gral. San Martin.

Estilo MLA

Abbs, Brian, Freebairn, Ingrid. Opening Strategies 1 : An integrated languaje course for beginners of english / Brian Abbs , Ingrid Freebairn. 1 england: Longman, 1982. IES DyT 9-001 Gral. San Martin.

Estilo Turabian

Abbs, Brian, Freebairn, Ingrid. Opening Strategies 1 : An integrated languaje course for beginners of english / Brian Abbs , Ingrid Freebairn. 1 england: Longman, 1982. IES DyT 9-001 Gral. San Martin.