Gaya APA
Crawford, J. Selwyn. (1984).
Principles and practices of obstetric anesthesia (5th. Ed.).
Oxford:
Blackwell Scientific.
Gaya Chicago
Crawford, J. Selwyn.
Principles and practices of obstetric anesthesia.
5th. Ed.
Oxford:
Blackwell Scientific,
1984.
Text.
Gaya MLA
Crawford, J. Selwyn.
Principles and practices of obstetric anesthesia.
5th. Ed.
Oxford:
Blackwell Scientific,
1984.
Text.
Gaya Turabian
Crawford, J. Selwyn.
Principles and practices of obstetric anesthesia.
5th. Ed.
Oxford:
Blackwell Scientific,
1984.
Print.